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