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