Here is the full list of all 30 Slasher's Keep achievements.
Let yourself be consumed
Complete the sasquatch storyline
Find the jade monkey
Kill Bindrick
Enter an infinite dungeon
Escape Slasher's Keep
Complete the northerner storyline
Escape a small dungeon
Find the lucky monkey paw
Escape the gauntlet
Eat 50 critters
Escape the prison
Defeat the giant spider
Craft an item
Complete a quest
Find a secret
Complete the amazon storyline
Complete the demon storyline
Complete the jellyman storyline
Complete the undead storyline
Re-enter Slasher's Keep
Escape a medium sized dungeon
Escape a deep dungeon
Escape a frightening dungeon
Escape a marathon sized dungeon
Escape an infernal dungeon
Satisfy the god of blood
Save Ava
Escape a large dungeon.
Use a prisoner chute.