diff --git a/public/locales b/public/locales
index 4928231e22a..acad8499a4c 160000
--- a/public/locales
+++ b/public/locales
@@ -1 +1 @@
-Subproject commit 4928231e22a06dce2b55d9b04cd2b283c2ee4afb
+Subproject commit acad8499a4ca488a9871902de140f635235f309a
diff --git a/src/data/challenge.ts b/src/data/challenge.ts
index b5eca55cb71..a01ceab8aa3 100644
--- a/src/data/challenge.ts
+++ b/src/data/challenge.ts
@@ -88,6 +88,11 @@ export enum ChallengeType {
    * Modifies what weight AI pokemon have when generating movesets. UNIMPLEMENTED.
    */
   MOVE_WEIGHT,
+  /**
+   * Modifies what the pokemon stats for Flip Stat Mode.
+   */
+  FLIP_STAT,
+
 }
 
 /**
@@ -405,6 +410,16 @@ export abstract class Challenge {
   applyMoveWeight(pokemon: Pokemon, moveSource: MoveSourceType, move: Moves, level: Utils.IntegerHolder): boolean {
     return false;
   }
+
+  /**
+   * An apply function for FlipStats. Derived classes should alter this.
+   * @param pokemon {@link Pokemon} What pokemon would learn the move.
+   * @param baseStats  What are the stats to flip.
+   * @returns {@link boolean} Whether this function did anything.
+   */
+  applyFlipStat(pokemon: Pokemon, baseStats: number[]) {
+    return false;
+  }
 }
 
 type ChallengeCondition = (data: GameData) => boolean;
@@ -705,6 +720,33 @@ export class InverseBattleChallenge extends Challenge {
   }
 }
 
+/**
+ * Implements a flip stat challenge.
+ */
+export class FlipStatChallenge extends Challenge {
+  constructor() {
+    super(Challenges.FLIP_STAT, 1);
+  }
+
+  override applyFlipStat(pokemon: Pokemon, baseStats: number[]) {
+    const origStats = Utils.deepCopy(baseStats);
+    baseStats[0] = origStats[5];
+    baseStats[1] = origStats[4];
+    baseStats[2] = origStats[3];
+    baseStats[3] = origStats[2];
+    baseStats[4] = origStats[1];
+    baseStats[5] = origStats[0];
+    return true;
+  }
+
+  static loadChallenge(source: FlipStatChallenge | any): FlipStatChallenge {
+    const newChallenge = new FlipStatChallenge();
+    newChallenge.value = source.value;
+    newChallenge.severity = source.severity;
+    return newChallenge;
+  }
+}
+
 /**
  * Lowers the amount of starter points available.
  */
@@ -890,6 +932,9 @@ export function applyChallenges(gameMode: GameMode, challengeType: ChallengeType
  * @returns True if any challenge was successfully applied.
  */
 export function applyChallenges(gameMode: GameMode, challengeType: ChallengeType.MOVE_WEIGHT, pokemon: Pokemon, moveSource: MoveSourceType, move: Moves, weight: Utils.IntegerHolder): boolean;
+
+export function applyChallenges(gameMode: GameMode, challengeType: ChallengeType.FLIP_STAT, pokemon: Pokemon, baseStats: number[]): boolean;
+
 export function applyChallenges(gameMode: GameMode, challengeType: ChallengeType, ...args: any[]): boolean {
   let ret = false;
   gameMode.challenges.forEach(c => {
@@ -934,6 +979,9 @@ export function applyChallenges(gameMode: GameMode, challengeType: ChallengeType
         case ChallengeType.MOVE_WEIGHT:
           ret ||= c.applyMoveWeight(args[0], args[1], args[2], args[3]);
           break;
+        case ChallengeType.FLIP_STAT:
+          ret ||= c.applyFlipStat(args[0], args[1]);
+          break;
       }
     }
   });
@@ -959,6 +1007,8 @@ export function copyChallenge(source: Challenge | any): Challenge {
       return FreshStartChallenge.loadChallenge(source);
     case Challenges.INVERSE_BATTLE:
       return InverseBattleChallenge.loadChallenge(source);
+    case Challenges.FLIP_STAT:
+      return FlipStatChallenge.loadChallenge(source);
   }
   throw new Error("Unknown challenge copied");
 }
@@ -971,5 +1021,6 @@ export function initChallenges() {
     new SingleTypeChallenge(),
     new FreshStartChallenge(),
     new InverseBattleChallenge(),
+    new FlipStatChallenge()
   );
 }
diff --git a/src/enums/challenges.ts b/src/enums/challenges.ts
index c4dc7460dfe..7b506a61a2f 100644
--- a/src/enums/challenges.ts
+++ b/src/enums/challenges.ts
@@ -5,4 +5,5 @@ export enum Challenges {
     LOWER_STARTER_POINTS,
     FRESH_START,
     INVERSE_BATTLE,
+    FLIP_STAT,
 }
diff --git a/src/field/pokemon.ts b/src/field/pokemon.ts
index 8fc00e2ebeb..432f0a92fec 100644
--- a/src/field/pokemon.ts
+++ b/src/field/pokemon.ts
@@ -1057,6 +1057,7 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
 
   calculateBaseStats(): number[] {
     const baseStats = this.getSpeciesForm(true).baseStats.slice(0);
+    applyChallenges(globalScene.gameMode, ChallengeType.FLIP_STAT, this, baseStats);
     // Shuckle Juice
     globalScene.applyModifiers(PokemonBaseStatTotalModifier, this.isPlayer(), this, baseStats);
     // Old Gateau
diff --git a/src/system/achv.ts b/src/system/achv.ts
index 1f5662dbdbe..fb17e7b1ced 100644
--- a/src/system/achv.ts
+++ b/src/system/achv.ts
@@ -5,7 +5,7 @@ import i18next from "i18next";
 import * as Utils from "../utils";
 import { PlayerGender } from "#enums/player-gender";
 import type { Challenge } from "#app/data/challenge";
-import { FreshStartChallenge, SingleGenerationChallenge, SingleTypeChallenge, InverseBattleChallenge } from "#app/data/challenge";
+import { FlipStatChallenge, FreshStartChallenge, SingleGenerationChallenge, SingleTypeChallenge, InverseBattleChallenge } from "#app/data/challenge";
 import type { ConditionFn } from "#app/@types/common";
 import { Stat, getShortenedStatKey } from "#app/enums/stat";
 import { Challenges } from "#app/enums/challenges";
@@ -280,6 +280,10 @@ export function getAchievementDescription(localizationKey: string): string {
       return i18next.t("achv:FRESH_START.description", { context: genderStr });
     case "INVERSE_BATTLE":
       return i18next.t("achv:INVERSE_BATTLE.description", { context: genderStr });
+    case "FLIP_STATS":
+      return i18next.t("achv:FLIP_STATS.description", { context: genderStr });
+    case "FLIP_INVERSE":
+      return i18next.t("achv:FLIP_INVERSE.description", { context: genderStr });
     case "BREEDERS_IN_SPACE":
       return i18next.t("achv:BREEDERS_IN_SPACE.description", { context: genderStr });
     default:
@@ -288,6 +292,7 @@ export function getAchievementDescription(localizationKey: string): string {
 
 }
 
+
 export const achvs = {
   _10K_MONEY: new MoneyAchv("10K_MONEY", "", 10000, "nugget", 10),
   _100K_MONEY: new MoneyAchv("100K_MONEY", "", 100000, "big_nugget", 25).setSecret(true),
@@ -330,35 +335,37 @@ export const achvs = {
   PERFECT_IVS: new Achv("PERFECT_IVS", "",  "PERFECT_IVS.description", "blunder_policy", 100),
   CLASSIC_VICTORY: new Achv("CLASSIC_VICTORY", "",  "CLASSIC_VICTORY.description", "relic_crown", 150, (_) => globalScene.gameData.gameStats.sessionsWon === 0),
   UNEVOLVED_CLASSIC_VICTORY: new Achv("UNEVOLVED_CLASSIC_VICTORY", "", "UNEVOLVED_CLASSIC_VICTORY.description", "eviolite", 175, (_) => globalScene.getPlayerParty().some(p => p.getSpeciesForm(true).speciesId in pokemonEvolutions)),
-  MONO_GEN_ONE_VICTORY: new ChallengeAchv("MONO_GEN_ONE", "",  "MONO_GEN_ONE.description", "ribbon_gen1", 100, (c) => c instanceof SingleGenerationChallenge && c.value === 1 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_GEN_TWO_VICTORY: new ChallengeAchv("MONO_GEN_TWO", "",  "MONO_GEN_TWO.description", "ribbon_gen2", 100, (c) => c instanceof SingleGenerationChallenge && c.value === 2 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_GEN_THREE_VICTORY: new ChallengeAchv("MONO_GEN_THREE", "",  "MONO_GEN_THREE.description", "ribbon_gen3", 100, (c) => c instanceof SingleGenerationChallenge && c.value === 3 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_GEN_FOUR_VICTORY: new ChallengeAchv("MONO_GEN_FOUR", "",  "MONO_GEN_FOUR.description", "ribbon_gen4", 100, (c) => c instanceof SingleGenerationChallenge && c.value === 4 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_GEN_FIVE_VICTORY: new ChallengeAchv("MONO_GEN_FIVE", "",  "MONO_GEN_FIVE.description", "ribbon_gen5", 100, (c) => c instanceof SingleGenerationChallenge && c.value === 5 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_GEN_SIX_VICTORY: new ChallengeAchv("MONO_GEN_SIX", "",  "MONO_GEN_SIX.description", "ribbon_gen6", 100, (c) => c instanceof SingleGenerationChallenge && c.value === 6 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_GEN_SEVEN_VICTORY: new ChallengeAchv("MONO_GEN_SEVEN", "",  "MONO_GEN_SEVEN.description", "ribbon_gen7", 100, (c) => c instanceof SingleGenerationChallenge && c.value === 7 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_GEN_EIGHT_VICTORY: new ChallengeAchv("MONO_GEN_EIGHT", "",  "MONO_GEN_EIGHT.description", "ribbon_gen8", 100, (c) => c instanceof SingleGenerationChallenge && c.value === 8 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_GEN_NINE_VICTORY: new ChallengeAchv("MONO_GEN_NINE", "",  "MONO_GEN_NINE.description", "ribbon_gen9", 100, (c) => c instanceof SingleGenerationChallenge && c.value === 9 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_NORMAL: new ChallengeAchv("MONO_NORMAL", "", "MONO_NORMAL.description", "silk_scarf", 100, (c) => c instanceof SingleTypeChallenge && c.value === 1 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_FIGHTING: new ChallengeAchv("MONO_FIGHTING", "", "MONO_FIGHTING.description", "black_belt", 100, (c) => c instanceof SingleTypeChallenge && c.value === 2 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_FLYING: new ChallengeAchv("MONO_FLYING", "", "MONO_FLYING.description", "sharp_beak", 100, (c) => c instanceof SingleTypeChallenge && c.value === 3 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_POISON: new ChallengeAchv("MONO_POISON", "", "MONO_POISON.description", "poison_barb", 100, (c) => c instanceof SingleTypeChallenge && c.value === 4 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_GROUND: new ChallengeAchv("MONO_GROUND", "", "MONO_GROUND.description", "soft_sand", 100, (c) => c instanceof SingleTypeChallenge && c.value === 5 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_ROCK: new ChallengeAchv("MONO_ROCK", "", "MONO_ROCK.description", "hard_stone", 100, (c) => c instanceof SingleTypeChallenge && c.value === 6 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_BUG: new ChallengeAchv("MONO_BUG", "", "MONO_BUG.description", "silver_powder", 100, (c) => c instanceof SingleTypeChallenge && c.value === 7 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_GHOST: new ChallengeAchv("MONO_GHOST", "", "MONO_GHOST.description", "spell_tag", 100, (c) => c instanceof SingleTypeChallenge && c.value === 8 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_STEEL: new ChallengeAchv("MONO_STEEL", "", "MONO_STEEL.description", "metal_coat", 100, (c) => c instanceof SingleTypeChallenge && c.value === 9 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_FIRE: new ChallengeAchv("MONO_FIRE", "", "MONO_FIRE.description", "charcoal", 100, (c) => c instanceof SingleTypeChallenge && c.value === 10 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_WATER: new ChallengeAchv("MONO_WATER", "", "MONO_WATER.description", "mystic_water", 100, (c) => c instanceof SingleTypeChallenge && c.value === 11 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_GRASS: new ChallengeAchv("MONO_GRASS", "", "MONO_GRASS.description", "miracle_seed", 100, (c) => c instanceof SingleTypeChallenge && c.value === 12 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_ELECTRIC: new ChallengeAchv("MONO_ELECTRIC", "", "MONO_ELECTRIC.description", "magnet", 100, (c) => c instanceof SingleTypeChallenge && c.value === 13 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_PSYCHIC: new ChallengeAchv("MONO_PSYCHIC", "", "MONO_PSYCHIC.description", "twisted_spoon", 100, (c) => c instanceof SingleTypeChallenge && c.value === 14 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_ICE: new ChallengeAchv("MONO_ICE", "", "MONO_ICE.description", "never_melt_ice", 100, (c) => c instanceof SingleTypeChallenge && c.value === 15 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_DRAGON: new ChallengeAchv("MONO_DRAGON", "", "MONO_DRAGON.description", "dragon_fang", 100, (c) => c instanceof SingleTypeChallenge && c.value === 16 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_DARK: new ChallengeAchv("MONO_DARK", "", "MONO_DARK.description", "black_glasses", 100, (c) => c instanceof SingleTypeChallenge && c.value === 17 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  MONO_FAIRY: new ChallengeAchv("MONO_FAIRY", "", "MONO_FAIRY.description", "fairy_feather", 100, (c) => c instanceof SingleTypeChallenge && c.value === 18 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  FRESH_START: new ChallengeAchv("FRESH_START", "", "FRESH_START.description", "reviver_seed", 100, (c) => c instanceof FreshStartChallenge && c.value > 0 && !globalScene.gameMode.challenges.some(c => c.id === Challenges.INVERSE_BATTLE && c.value > 0)),
-  INVERSE_BATTLE: new ChallengeAchv("INVERSE_BATTLE", "", "INVERSE_BATTLE.description", "inverse", 100, c => c instanceof InverseBattleChallenge && c.value > 0),
+  MONO_GEN_ONE_VICTORY: new ChallengeAchv("MONO_GEN_ONE", "",  "MONO_GEN_ONE.description", "ribbon_gen1", 100, (c) => c instanceof SingleGenerationChallenge && c.value === 1 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_GEN_TWO_VICTORY: new ChallengeAchv("MONO_GEN_TWO", "",  "MONO_GEN_TWO.description", "ribbon_gen2", 100, (c) => c instanceof SingleGenerationChallenge && c.value === 2 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_GEN_THREE_VICTORY: new ChallengeAchv("MONO_GEN_THREE", "",  "MONO_GEN_THREE.description", "ribbon_gen3", 100, (c) => c instanceof SingleGenerationChallenge && c.value === 3 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_GEN_FOUR_VICTORY: new ChallengeAchv("MONO_GEN_FOUR", "",  "MONO_GEN_FOUR.description", "ribbon_gen4", 100, (c) => c instanceof SingleGenerationChallenge && c.value === 4 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_GEN_FIVE_VICTORY: new ChallengeAchv("MONO_GEN_FIVE", "",  "MONO_GEN_FIVE.description", "ribbon_gen5", 100, (c) => c instanceof SingleGenerationChallenge && c.value === 5 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_GEN_SIX_VICTORY: new ChallengeAchv("MONO_GEN_SIX", "",  "MONO_GEN_SIX.description", "ribbon_gen6", 100, (c) => c instanceof SingleGenerationChallenge && c.value === 6 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_GEN_SEVEN_VICTORY: new ChallengeAchv("MONO_GEN_SEVEN", "",  "MONO_GEN_SEVEN.description", "ribbon_gen7", 100, (c) => c instanceof SingleGenerationChallenge && c.value === 7 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_GEN_EIGHT_VICTORY: new ChallengeAchv("MONO_GEN_EIGHT", "",  "MONO_GEN_EIGHT.description", "ribbon_gen8", 100, (c) => c instanceof SingleGenerationChallenge && c.value === 8 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_GEN_NINE_VICTORY: new ChallengeAchv("MONO_GEN_NINE", "",  "MONO_GEN_NINE.description", "ribbon_gen9", 100, (c) => c instanceof SingleGenerationChallenge && c.value === 9 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_NORMAL: new ChallengeAchv("MONO_NORMAL", "", "MONO_NORMAL.description", "silk_scarf", 100, (c) => c instanceof SingleTypeChallenge && c.value === 1 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_FIGHTING: new ChallengeAchv("MONO_FIGHTING", "", "MONO_FIGHTING.description", "black_belt", 100, (c) => c instanceof SingleTypeChallenge && c.value === 2 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_FLYING: new ChallengeAchv("MONO_FLYING", "", "MONO_FLYING.description", "sharp_beak", 100, (c) => c instanceof SingleTypeChallenge && c.value === 3 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_POISON: new ChallengeAchv("MONO_POISON", "", "MONO_POISON.description", "poison_barb", 100, (c) => c instanceof SingleTypeChallenge && c.value === 4 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_GROUND: new ChallengeAchv("MONO_GROUND", "", "MONO_GROUND.description", "soft_sand", 100, (c) => c instanceof SingleTypeChallenge && c.value === 5 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_ROCK: new ChallengeAchv("MONO_ROCK", "", "MONO_ROCK.description", "hard_stone", 100, (c) => c instanceof SingleTypeChallenge && c.value === 6 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_BUG: new ChallengeAchv("MONO_BUG", "", "MONO_BUG.description", "silver_powder", 100, (c) => c instanceof SingleTypeChallenge && c.value === 7 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_GHOST: new ChallengeAchv("MONO_GHOST", "", "MONO_GHOST.description", "spell_tag", 100, (c) => c instanceof SingleTypeChallenge && c.value === 8 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_STEEL: new ChallengeAchv("MONO_STEEL", "", "MONO_STEEL.description", "metal_coat", 100, (c) => c instanceof SingleTypeChallenge && c.value === 9 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_FIRE: new ChallengeAchv("MONO_FIRE", "", "MONO_FIRE.description", "charcoal", 100, (c) => c instanceof SingleTypeChallenge && c.value === 10 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_WATER: new ChallengeAchv("MONO_WATER", "", "MONO_WATER.description", "mystic_water", 100, (c) => c instanceof SingleTypeChallenge && c.value === 11 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_GRASS: new ChallengeAchv("MONO_GRASS", "", "MONO_GRASS.description", "miracle_seed", 100, (c) => c instanceof SingleTypeChallenge && c.value === 12 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_ELECTRIC: new ChallengeAchv("MONO_ELECTRIC", "", "MONO_ELECTRIC.description", "magnet", 100, (c) => c instanceof SingleTypeChallenge && c.value === 13 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_PSYCHIC: new ChallengeAchv("MONO_PSYCHIC", "", "MONO_PSYCHIC.description", "twisted_spoon", 100, (c) => c instanceof SingleTypeChallenge && c.value === 14 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_ICE: new ChallengeAchv("MONO_ICE", "", "MONO_ICE.description", "never_melt_ice", 100, (c) => c instanceof SingleTypeChallenge && c.value === 15 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_DRAGON: new ChallengeAchv("MONO_DRAGON", "", "MONO_DRAGON.description", "dragon_fang", 100, (c) => c instanceof SingleTypeChallenge && c.value === 16 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_DARK: new ChallengeAchv("MONO_DARK", "", "MONO_DARK.description", "black_glasses", 100, (c) => c instanceof SingleTypeChallenge && c.value === 17 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  MONO_FAIRY: new ChallengeAchv("MONO_FAIRY", "", "MONO_FAIRY.description", "fairy_feather", 100, (c) => c instanceof SingleTypeChallenge && c.value === 18 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  FRESH_START: new ChallengeAchv("FRESH_START", "", "FRESH_START.description", "reviver_seed", 100, (c) => c instanceof FreshStartChallenge && c.value > 0 && !globalScene.gameMode.challenges.some(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
+  INVERSE_BATTLE: new ChallengeAchv("INVERSE_BATTLE", "", "INVERSE_BATTLE.description", "inverse", 100, (c) => c instanceof InverseBattleChallenge && c.value > 0),
+  FLIP_STATS: new ChallengeAchv("FLIP_STATS", "", "FLIP_STATS.description", "dubious_disc", 100, (c) => c instanceof FlipStatChallenge && c.value > 0),
+  FLIP_INVERSE: new ChallengeAchv("FLIP_INVERSE", "", "FLIP_INVERSE.description", "cracked_pot", 100, (c) => c instanceof FlipStatChallenge && c.value > 0 && globalScene.gameMode.challenges.every(c => [ Challenges.INVERSE_BATTLE, Challenges.FLIP_STAT ].includes(c.id) && c.value > 0)),
   BREEDERS_IN_SPACE: new Achv("BREEDERS_IN_SPACE", "", "BREEDERS_IN_SPACE.description", "moon_stone", 50).setSecret(),
 };