The EPISODE 3 Add-on for Muffles' Life Sentence has 10 achievements.
Get the Trapper hat.
Find where the rubber duck is hiding.
Get the Shamanka's face.
Get Marcelo's face.
Open all stashes in Episode 3.
Find all memories in Episode 3.
Acquire 5 Tokens of Unseen Favor.
Get Kunie's face.
Reunite Dee with its head.
Finish Episode 3.