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