After Playing the game through im still missing 3 Artifcats:
- The hub Artifact
Access from the vault
- The arena Artificat (i still miss 4/6 mastery)
I always get hurt in some point of any challenge.
- Vault artifact
In the vault (Schocker and bombs required for access)

How do i know:
- 3 bars are not yet filled in the crypt shop
- 3 stands are free