Here is the full list of all 22 Zeno Clash achievements.
Capture 30 fireballs with the torch.
Ignite all pyres.
Complete the game.
Input the Malstrum's Mansion secret code.
Kill 50% of the harmless animals in the game.
Find the secret easter egg.
Shoot 21 Mucalosaurus Worshippers from the boat.
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.
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.
Learn all advanced combat techniques.