Here is the full list of all 41 Pentiment achievements.
Get assistance climbing down the mine shaft.
Learn about Artemis and Apollo's frog plan.
Examine 10 flowers.
Finished Act 2.
Get Hanna killed.
Discover the imposter.
Pass 5 dialogue checks.
Shoot the deer.
Lose everything at Lansquenet.
Finished Act 1.
End Act I in the abbot's favor.
Get Ottilia executed.
End Act I out of the abbot's favor.
Get Ferenc executed.
Tell Jacob Estler immaterial gossip.
Encourage Paul to draw.
Seduce Zdena.
Spin wool as fast as the ladies.
Pet 5 animals.
Solve Ferenc's cipher with the volvelle.
Find the secret door to library.
Convince Illuminata to give you the French book.
Get Lucky executed.
Get Matilda executed.
Get Martin killed.
Get Guy killed.
Headbutt Werner.
Have your hat stolen.
Get Wojslav to let you into the cellar.
Convince Gernot to let you dig up the grave.
Convince Jacob Estler to save Ottilia's home.
Get knocked out.
Win everyone's money at Lansquenet.
Convince Endris to find his sweetheart.
Complain to Niko about your room.
Get Aedoc his medicine.
Do your penance.
Refuse to shoot at the deer.
Cut enough cookies for everyone at the Christmas feast.
Learn the mystery of the cats.
Finished Act 3.