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