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