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.
Witness another player complete the transfer.
Complete the transfer chamber.
Complete the fourth episode with over 30 minutes to spare.
Become the professor of the Gladsbury Estate.
Completed all four episodes within the time limit.
Complete a full run of episode 4 within the time limit.
Complete the laboratory.
Complete the south garret.
Complete the observatory.
Complete the gallery.
Complete the third episode with over 30 minutes to spare.
Complete the pantry.
Complete a full run of episode 3 within the time limit.
Complete the conservatory.
Complete the workshop.
Unlock a hundred doors.
Complete the greenhouse.
Complete the isolated study.
Complete the master bedroom.
Complete the archives.
Complete the chapel.
Complete the second episode with over 30 minutes to spare.
Complete a full run of episode 2 within the time limit.
Complete the storage cellars.
Complete the bunker room.
Complete the old tower.
Complete the darkroom.
Complete the wine cellar.
Complete the office.
Open 50 doors.
Complete the first episode with over 30 minutes to spare.
Complete the game room.
Complete the study parlor.
Complete the dining hall.
Listen to your first audio recording.
Complete a full run of episode 1 within the time limit.
Ensure no drawer, panel or door is left open in a successful multiplayer game.
Complete the library.
Complete the guest wing.
Complete the passageway.
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.