List of all secret codes, which you can activate in-game
Extra Codes
- markiplier- Pink Mustache (Facial Hair)
- jacksepticeye- Septic Eye Sam (Hat)
- lordminion777- Crown (Hat)
- myskerm- Headphones (Hat)
- jimsterling- Boglin (Hat)
- POISONAPPLE- Apple (Hat)
- B-0V1N3- Cow Mask (Hat)
- LORDGRUMGRUM- Shark Cat (Hat)
Source: https://gameplay.tips/guides/1923-we-need-to-go-deeper.html