Here is the full list of all 22 Strangeland achievements.
Lasted as long as Rosencrantz and Guildenstern.
The Stranger jumped.
The Stranger escaped Strangeland.
The Stranger killed himself.
The Stranger died fighting.
Talked to all the major characters.
Got the final knife.
Died every possible way.
Exited the Hall of Mirrors.
Reached the Hall of Mirrors.
Correctly identified the Young, Middle Age, and Old Strangers.
Got Tooth.
Killed the Crab.
Gathered all the spirits using the torch.
Persuaded Nineveh to hone Beak.
Opened the box.
Released the Dark Thing.
Heard all the Clown's jokes.
Got Beak.
Won the Shooting Gallery on the highest speed.
Starting Out.
Resisted opening the box.