Here is the full list of all 52 Spell Cast achievements.
Killled 100 mob
Die 20 Times
Move 5000 pixel
Reached level 2
You killed a boss!
Reached level 5
Killed 1000 mob
Move 100000 pixel
Reached level 10
First spell upgraded
10 Spell Upgraded
100 Spell Upgraded
Move 1000000 pixel
Reached level 15
Reached level 20
Killed 10 boss
Killed 100 boss
Killed 10000 mob
Reached level 25
You revived a teammate
Revived 10 teammate
Kill streak x100
You Unlocked First Stage
You make game harder!
You are friendly!
Played as Sorcerer
Played as Hunter
Played as Dark Mage
Played as Archer
Played as Knight
Reached level 30
Reached level 35
Reached level 40
Reached level 45
Reached level 50
Reached level 55
Reached level 60
Reached level 65
Reached level 70
You slowed an enemy
You charmed an enemy
You fired an enemy
You trapped an enemy
You scared an enemy
You used bouncy projectile
You increased your luck
You dashed first time
Dash is usefull, dont you agree?
I guess you don't want anyone to touch you.
Who doesn't love speed?
Pew Pew Pew
It hurts!