Unofficial Roblox fan guide
Keep the Door Locked Upgrade Tiers
Use tiers as a decision framework until the game publishes exact upgrade stats or a complete shop list.
Tier framework
| Tier | Upgrade purpose | When to buy |
|---|---|---|
| S | Survival or mistake protection | First priority |
| A | Camera, rule, or room awareness | Early and mid run |
| B | Recovery and convenience | After core safety |
| C | Cosmetic or unconfirmed value | Postpone |
This is a community recommendation framework, not an official tier list.