diff --git a/src/controllers/api/giveKeyChainTriggeredItemsController.ts b/src/controllers/api/giveKeyChainTriggeredItemsController.ts
index 1f875cd5..4981bd11 100644
--- a/src/controllers/api/giveKeyChainTriggeredItemsController.ts
+++ b/src/controllers/api/giveKeyChainTriggeredItemsController.ts
@@ -1,12 +1,12 @@
 import type { RequestHandler } from "express";
-import { parseString } from "../../helpers/general.ts";
 import { getJSONfromString } from "../../helpers/stringHelpers.ts";
 import { getInventory } from "../../services/inventoryService.ts";
 import { giveKeyChainItem } from "../../services/questService.ts";
 import type { IKeyChainRequest } from "../../types/requestTypes.ts";
+import { getAccountIdForRequest } from "../../services/loginService.ts";
 
 export const giveKeyChainTriggeredItemsController: RequestHandler = async (req, res) => {
-    const accountId = parseString(req.query.accountId);
+    const accountId = await getAccountIdForRequest(req);
     const keyChainInfo = getJSONfromString<IKeyChainRequest>((req.body as string).toString());
 
     const inventory = await getInventory(accountId);
diff --git a/src/controllers/api/reverseQuestProgressController.ts b/src/controllers/api/reverseQuestProgressController.ts
new file mode 100644
index 00000000..4c62d743
--- /dev/null
+++ b/src/controllers/api/reverseQuestProgressController.ts
@@ -0,0 +1,17 @@
+import type { RequestHandler } from "express";
+import { getAccountIdForRequest } from "../../services/loginService.ts";
+import { resetQuestKeyToStage } from "../../services/questService.ts";
+import { getInventory } from "../../services/inventoryService.ts";
+import { getJSONfromString } from "../../helpers/stringHelpers.ts";
+import type { IKeyChainRequest } from "../../types/requestTypes.ts";
+
+export const reverseQuestProgressController: RequestHandler = async (req, res) => {
+    const accountId = await getAccountIdForRequest(req);
+    const keyChainInfo = getJSONfromString<IKeyChainRequest>((req.body as string).toString());
+
+    const inventory = await getInventory(accountId);
+    resetQuestKeyToStage(inventory, keyChainInfo);
+    await inventory.save();
+
+    res.end();
+};
diff --git a/src/routes/api.ts b/src/routes/api.ts
index 5502a0c8..e594a2e7 100644
--- a/src/routes/api.ts
+++ b/src/routes/api.ts
@@ -120,6 +120,7 @@ import { rerollRandomModController } from "../controllers/api/rerollRandomModCon
 import { researchMushroomController } from "../controllers/api/researchMushroomController.ts";
 import { resetQuestProgressController } from "../controllers/api/resetQuestProgressController.ts";
 import { retrievePetFromStasisController } from "../controllers/api/retrievePetFromStasisController.ts";
+import { reverseQuestProgressController } from "../controllers/api/reverseQuestProgressController.ts";
 import { saveDialogueController } from "../controllers/api/saveDialogueController.ts";
 import { saveLoadoutController } from "../controllers/api/saveLoadoutController.ts";
 import { saveSettingsController } from "../controllers/api/saveSettingsController.ts";
@@ -323,6 +324,7 @@ apiRouter.post("/renamePet.php", renamePetController);
 apiRouter.post("/rerollRandomMod.php", rerollRandomModController);
 apiRouter.post("/researchMushroom.php", researchMushroomController);
 apiRouter.post("/retrievePetFromStasis.php", retrievePetFromStasisController);
+apiRouter.post("/reverseQuestProgress.php", reverseQuestProgressController);
 apiRouter.post("/saveDialogue.php", saveDialogueController);
 apiRouter.post("/saveLoadout.php", saveLoadoutController);
 apiRouter.post("/saveSettings.php", saveSettingsController);
diff --git a/src/services/questService.ts b/src/services/questService.ts
index b99d1879..ad1f8df6 100644
--- a/src/services/questService.ts
+++ b/src/services/questService.ts
@@ -92,6 +92,30 @@ export const updateQuestStage = (
     }
 };
 
+export const resetQuestKeyToStage = (
+    inventory: TInventoryDatabaseDocument,
+    { KeyChain, ChainStage }: IKeyChainRequest
+): void => {
+    const quest = inventory.QuestKeys.find(quest => quest.ItemType === KeyChain);
+
+    if (!quest) {
+        throw new Error(`Quest ${KeyChain} not found in QuestKeys`);
+    }
+
+    quest.Progress ??= [];
+
+    quest.Progress.splice(1 + ChainStage); // remove stages past the target
+
+    const questStage = quest.Progress[ChainStage];
+    // eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
+    if (questStage) {
+        const run = quest.Progress[0].c;
+        if (run >= 0) {
+            questStage.c = run - 1;
+        }
+    }
+};
+
 export const addQuestKey = (
     inventory: TInventoryDatabaseDocument,
     questKey: IQuestKeyDatabase