Here is the full list of all 31 Magicka: Wizards of the Square Tablet achievements.
Win a stage without ever using the Life element.
Gib three enemies in one second.
Get killed by your own staff.
Get blown to bits and have your staff get stuck in the ground pole-first.
Blow yourself up with a regular self-targeted spell.
Multiplayer: Deal at least 800 damage to a fellow wizard in one attack.
Cast Supernova.
Defeat Grampa the Gray.
Suffer at least 5000 damage in one blow.
Suffer at least 1000 damage in one blow.
Let a Seagal die from Oil.
Unlock this achievement to unlock this achievement.
Defeat Helsdottir.
Defeat the Dark Young.
Defeat the Elk Dragon.
Defeat the Big Friendly Crab.
Kill a Land Shark with a Thunder bolt.
Defeat Disa.
Multiplayer: Have a team of four wizards all die.
Multiplayer: Have the yellow wizard die first in a stage's very first encounter.
Purchase a familiar.
Imbue a personal barrier with three different elements.
Get decapitated.
Die from a stage hazard.
Multiplayer: Die at least twice as often as all your teammates combined.
Multiplayer: Telefrag a fellow wizard.
Multiplayer: Kill a fellow wizard.
Explode so hard that your staff makes 3 full rotations before landing.
Suffer at least 500 damage in one blow.
Multiplayer: Have the green wizard never die or cast a single spell and still win the stage.
Win a stage by blowing every single enemy to bits.