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