The Residence Massacre mutation outfit is the ultimate cosmetic reward earned by completing 100% of all non-limited badges in MisterGamer_67's Roblox horror survival game, Residence Massacre. Players unlock this skin by claiming the final milestone in the in-game Badge Index or by earning the Completionist badge, which requires collecting every other badge in the game.
How to Unlock the Mutation Outfit
To obtain the Mutation outfit, you must complete every standard achievement across the game's various modes, including Night 1, Night 2, Night 3, Memories, and Endless mode. According to the game's badge documentation, the unlock is directly tied to the Completionist badge, which requires collecting every other badge.
Progress toward the outfit is tracked through the Badge Index menu in the main lobby. The index calculates your completion percentage based on non-limited badges. Once your progress reaches 100%, you can claim the outfit directly from the Milestones menu.
| Milestone Completion | Reward | Reward Type |
|---|---|---|
| 25% Non-Limited Badges | 500 Coins | In-game Currency |
| 50% Non-Limited Badges | 1,000 Coins | In-game Currency |
| 75% Non-Limited Badges | Raver Outfit | Avatar Outfit |
| 100% Non-Limited Badges | Mutation Outfit | Avatar Outfit |
Where to Claim the Mutation Outfit in the Lobby
The unlock is claimed through the central hub area before launching a night. Follow these steps to access your milestone rewards:
- Enter the main Lobby (the parking lot outside the Robloxia Factory).
- Walk to the center of the parking lot and locate the Badge Index, which is managed by the Lead Factory Worker NPC.
- Open the Badge Index interface to view your category breakdown across General, Night 1, Night 2, Night 3, Memories, Endless, and Limited badges.
- Click the red Milestones button located at the bottom of the Badge Index window.
- Claim the 100% reward to add the Mutation outfit to your profile inventory.
How to Equip the Mutation Outfit
Once unlocked, outfits are equipped through the player's personal custom menu rather than an external shop:
- Click the top icon on the left side of the screen (the hat icon) to open your Inventory.
- Select the Outfits tab from the navigation bar.
- Scroll through your owned items and select Mutation to apply it to your character model.
- If you want to switch between looks quickly, use one of the 4 cosmetic save slots provided in the Outfits tab to store your customized setup.
You can also pair the outfit with unlocked hats by switching to the Hats tab in the same Inventory window, or adjust torso colors in the Color tab if you own the Color Picker Gamepass.
Mutation Outfit Appearance and Gameplay Effects
According to player gameplay overviews, the Mutation outfit alters your avatar's visual model to resemble an infected mutant similar to Gary. Equipping the skin does not change enemy AI behavior or provide gameplay buffs:
- The outfit is purely cosmetic and offers no damage reduction or extra stamina.
- Mutants and environmental hazards can still attack and eliminate you as normal during gameplay rounds.
- It serves as a visual trophy indicating that you have completed every base challenge across standard nights, modifiers, and memory levels.
Frequently Asked Questions
Does wearing the Mutation outfit make the Mutant ignore you?
No. Despite altering your model to resemble a mutant, player testing confirms that hostile entities like the Mutant or the Mutated Worker will chase and kill you normally.
Do limited-time event badges count toward the 100% milestone?
According to the lobby's Badge Index rules, milestone reward percentages are calculated using non-limited badges, meaning expired seasonal badges are not required to complete the 100% requirement.
Where can I check how many badges I still need?
Visit the Lead Factory Worker at the Badge Index in the lobby. The interface displays your overall completion percentage as well as your individual completion stats for General, Night 1, Night 2, Night 3, Memories, and Endless categories.
