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