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