Here is the full list of all 13 Tainted Fate achievements.
Chop off a sinner’s head in the guillotine.
Solve your first puzzle.
Kill the first boss.
Get the slow motion ability.
Blow up the lighthouse.
Attend your welcome home party.
Kill the final boss.
Get on the Arena Mode leaderboards.
Find all of the collectibles.
Eat 50 organs.
Kill a cultist.
Kill 10 of your own minions.
Tear off 100 limbs.