Here is the full list of all 50 Last Will achievements.
Complete the game room.
Complete the first episode with over 30 minutes to spare.
Complete the library.
Complete the office.
Complete the passageway.
Complete the bunker room.
Complete the storage cellars.
Reject the will and your inheritance.
Complete the greenhouse.
Unlock a hundred doors.
Watch the prologue.
Complete the transfer chamber.
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.
Become the professor of the Gladsbury Estate.
Open 50 doors.
Complete the fourth episode with over 30 minutes to spare.
Witness another player complete the transfer.
Completed all four episodes within the time limit.
Complete a full run of episode 4 within the time limit.
Complete the laboratory.
Complete the observatory.
Complete the gallery.
Complete the south garret.
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 a full run of episode 3 within the time limit.
Complete the pantry.
Complete the isolated study.
Complete the workshop.
Complete the conservatory.
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.
Complete the old tower.
Complete the wine cellar.
Complete the chapel.
Complete the darkroom.
Complete the archives.
Complete any act with a full team in under 40 minutes.
Complete a full run of episode 1 within the time limit.
Complete the guest wing.
Complete the chess room.
Complete the dining hall.
Complete the study parlor.
Open your first door in the mansion.
Complete the entrance hall.
Listen to your first audio recording.
Enter the mansion with a full team of four players.