Here is the full list of all 22 Zeno Clash achievements.
Input the Malstrum's Mansion secret code.
Beat the game without using weapons unless it is absolutely necessary.
Capture 30 fireballs with the torch.
Kill 50% of the harmless animals in the game.
Defeat a heavy enemy without getting hit.
Find the secret easter egg.
Annoy the man behind the door.
Bring the Hunter down to 1 healthpoint in melee combat.
Complete Tower Challenge Number -3.
Complete Tower Challenge Number -2.
Complete Tower Challenge Number -1.
Land 50 deflect kicks.
Complete Tower Challenge Number 5.
Complete Tower Challenge Number 4.
Complete Tower Challenge Number 3.
Throw an enemy into another.
Complete Tower Challenge Number 2.
Complete Tower Challenge Number 1.
Complete the game.
Shoot 21 Mucalosaurus Worshippers from the boat.
Ignite all pyres.
Learn all advanced combat techniques.