We Need to Go Deeper

Cosmetics Secret Codes:
List of all secret codes, which you can activate in-game

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)