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