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