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