diff --git a/src/controllers/api/nemesisController.ts b/src/controllers/api/nemesisController.ts
index 43fe2cb7..8c192a16 100644
--- a/src/controllers/api/nemesisController.ts
+++ b/src/controllers/api/nemesisController.ts
@@ -1,10 +1,17 @@
-import { getInfNodes, getNemesisPasscode } from "@/src/helpers/nemesisHelpers";
+import { encodeNemesisGuess, getInfNodes, getNemesisPasscode } from "@/src/helpers/nemesisHelpers";
 import { getJSONfromString } from "@/src/helpers/stringHelpers";
 import { freeUpSlot, getInventory } from "@/src/services/inventoryService";
 import { getAccountIdForRequest } from "@/src/services/loginService";
 import { SRng } from "@/src/services/rngService";
 import { IMongoDate, IOid } from "@/src/types/commonTypes";
-import { IInnateDamageFingerprint, InventorySlot, TEquipmentKey } from "@/src/types/inventoryTypes/inventoryTypes";
+import { IEquipmentClient } from "@/src/types/inventoryTypes/commonInventoryTypes";
+import {
+    IInnateDamageFingerprint,
+    InventorySlot,
+    IUpgradeClient,
+    IWeaponSkinClient,
+    TEquipmentKey
+} from "@/src/types/inventoryTypes/inventoryTypes";
 import { logger } from "@/src/utils/logger";
 import { RequestHandler } from "express";
 
@@ -66,6 +73,69 @@ export const nemesisController: RequestHandler = async (req, res) => {
             }
         }
         res.json({ GuessResult: guessResult });
+    } else if (req.query.mode == "r") {
+        const inventory = await getInventory(accountId, "Nemesis");
+        const body = getJSONfromString<INemesisRequiemRequest>(String(req.body));
+        if (inventory.Nemesis!.Faction == "FC_INFESTATION") {
+            const guess: number[] = [body.guess & 0xf, (body.guess >> 4) & 0xf, (body.guess >> 8) & 0xf];
+            const passcode = getNemesisPasscode(inventory.Nemesis!)[0];
+
+            // Add to GuessHistory
+            const result1 = passcode == guess[0] ? 0 : 1;
+            const result2 = passcode == guess[1] ? 0 : 1;
+            const result3 = passcode == guess[2] ? 0 : 1;
+            inventory.Nemesis!.GuessHistory.push(
+                encodeNemesisGuess(guess[0], result1, guess[1], result2, guess[2], result3)
+            );
+
+            // Increase antivirus
+            let antivirusGain = 5;
+            for (const upgrade of body.knife!.AttachedUpgrades) {
+                switch (upgrade.ItemType) {
+                    case "/Lotus/Upgrades/Mods/DataSpike/Potency/GainAntivirusAndSpeedOnUseMod":
+                        antivirusGain += 10;
+                        break;
+                    case "/Lotus/Upgrades/Mods/DataSpike/Potency/GainAntivirusAndWeaponDamageOnUseMod":
+                        antivirusGain += 10;
+                        break;
+                    case "/Lotus/Upgrades/Mods/DataSpike/Potency/GainAntivirusLargeOnSingleUseMod": // Instant Secure
+                        antivirusGain += 15;
+                        break;
+                    case "/Lotus/Upgrades/Mods/DataSpike/Potency/GainAntivirusOnUseMod": // Immuno Shield
+                        antivirusGain += 15;
+                        break;
+                    case "/Lotus/Upgrades/Mods/DataSpike/Potency/GainAntivirusSmallOnSingleUseMod":
+                        antivirusGain += 10;
+                        break;
+                }
+            }
+            inventory.Nemesis!.HenchmenKilled += antivirusGain;
+            if (inventory.Nemesis!.HenchmenKilled >= 100) {
+                inventory.Nemesis!.InfNodes = [
+                    {
+                        Node: "CrewBattleNode559",
+                        Influence: 1
+                    }
+                ];
+                inventory.Nemesis!.Weakened = true;
+            } else {
+                inventory.Nemesis!.InfNodes = getInfNodes("FC_INFESTATION", 0);
+            }
+
+            // TODO: Consume mod charges?
+
+            await inventory.save();
+            res.end();
+        } else {
+            const passcode = getNemesisPasscode(inventory.Nemesis!);
+            if (passcode[body.position] != body.guess) {
+                res.end();
+            } else {
+                inventory.Nemesis!.Rank += 1;
+                await inventory.save();
+                res.json({ RankIncrease: 1 });
+            }
+        }
     } else if ((req.query.mode as string) == "rs") {
         // report spawn; POST but no application data in body
         const inventory = await getInventory(accountId, "Nemesis");
@@ -179,6 +249,20 @@ interface INemesisPrespawnCheckRequest {
     potency?: number[];
 }
 
+interface INemesisRequiemRequest {
+    guess: number; // grn/crp: 4 bits | coda: 3x 4 bits
+    position: number; // grn/crp: 0-2 | coda: 0
+    // knife field provided for coda only
+    knife?: {
+        Item: IEquipmentClient;
+        Skins: IWeaponSkinClient[];
+        ModSlot: number;
+        CustSlot: number;
+        AttachedUpgrades: IUpgradeClient[];
+        HiddenWhenHolstered: boolean;
+    };
+}
+
 const kuvaLichVersionSixWeapons = [
     "/Lotus/Weapons/Grineer/KuvaLich/LongGuns/Drakgoon/KuvaDrakgoon",
     "/Lotus/Weapons/Grineer/KuvaLich/LongGuns/Karak/KuvaKarak",
diff --git a/src/helpers/nemesisHelpers.ts b/src/helpers/nemesisHelpers.ts
index 9b9f54b6..9dcaa2cf 100644
--- a/src/helpers/nemesisHelpers.ts
+++ b/src/helpers/nemesisHelpers.ts
@@ -42,3 +42,25 @@ export const getNemesisPasscode = (nemesis: { fp: bigint; Faction: string }): nu
     }
     return passcode;
 };
+
+export const encodeNemesisGuess = (
+    symbol1: number,
+    result1: number,
+    symbol2: number,
+    result2: number,
+    symbol3: number,
+    result3: number
+): number => {
+    return (
+        (symbol1 & 0xf) |
+        ((result1 & 3) << 12) |
+        ((symbol2 << 4) & 0xff) |
+        ((result2 << 14) & 0xffff) |
+        ((symbol3 & 0xf) << 8) |
+        ((result3 & 3) << 16)
+    );
+};
+
+export const decodeNemesisGuess = (val: number): number[] => {
+    return [val & 0xf, (val >> 12) & 3, (val & 0xff) >> 4, (val & 0xffff) >> 14, (val >> 8) & 0xf, (val >> 16) & 3];
+};
diff --git a/src/services/missionInventoryUpdateService.ts b/src/services/missionInventoryUpdateService.ts
index e6492a6e..de488ec4 100644
--- a/src/services/missionInventoryUpdateService.ts
+++ b/src/services/missionInventoryUpdateService.ts
@@ -699,25 +699,10 @@ export const addMissionRewards = async (
             }
 
             if (inventory.Nemesis.Faction == "FC_INFESTATION") {
-                inventoryChanges.Nemesis.HenchmenKilled ??= 0;
-                inventoryChanges.Nemesis.MissionCount ??= 0;
-
-                inventory.Nemesis.HenchmenKilled += 5;
                 inventory.Nemesis.MissionCount += 1;
 
-                inventoryChanges.Nemesis.HenchmenKilled += 5;
+                inventoryChanges.Nemesis.MissionCount ??= 0;
                 inventoryChanges.Nemesis.MissionCount += 1;
-
-                if (inventory.Nemesis.HenchmenKilled >= 100) {
-                    inventory.Nemesis.InfNodes = [
-                        {
-                            Node: "CrewBattleNode559",
-                            Influence: 1
-                        }
-                    ];
-                    inventory.Nemesis.Weakened = true;
-                    inventoryChanges.Nemesis.Weakened = true;
-                }
             }
 
             inventoryChanges.Nemesis.InfNodes = inventory.Nemesis.InfNodes;