Here is the full list of all 50 Last Will achievements.
Complete any act with a full team in under 40 minutes.
Complete the guest wing.
Enter the mansion with a full team of four players.
Complete the game room.
Complete the archives.
Complete the Chaos Gauntlet with over 30 minutes to spare.
Complete a full run of the Chaos Gauntlet within the time limit.
Deliberately take out the entire mansion, and whatever may be lost with it.
Witness another player complete the transfer.
Completed all four episodes within the time limit.
Complete the transfer chamber.
Complete a full run of episode 4 within the time limit.
Complete the fourth episode with over 30 minutes to spare.
Become the professor of the Gladsbury Estate.
Complete a full run of episode 3 within the time limit.
Complete the third episode with over 30 minutes to spare.
Complete the workshop.
Complete a full run of episode 2 within the time limit.
Complete the second episode with over 30 minutes to spare.
Complete the storage cellars.
Unlock a hundred doors.
Complete a full run of episode 1 within the time limit.
Complete the first episode with over 30 minutes to spare.
Complete the study parlor.
Complete the dining hall.
Open 50 doors.
Complete the isolated study.
Complete the pantry.
Reject the will and your inheritance.
Complete the laboratory.
Complete the observatory.
Complete the south garret.
Complete the gallery.
Complete the greenhouse.
Complete the conservatory.
Complete the master bedroom.
Complete the bunker room.
Complete the darkroom.
Complete the chapel.
Listen to your first audio recording.
Complete the old tower.
Complete the wine cellar.
Ensure no drawer, panel or door is left open in a successful multiplayer game.
Complete the office.
Complete the passageway.
Complete the library.
Complete the chess room.
Open your first door in the mansion.
Complete the entrance hall.
Watch the prologue.