Here is the full list of all 34 Sorcery trophies - there are 18 bronze, 11 silver, 4 gold and 1 platinum.
Collect all the other trophies in the game
Open every chest in the game
Collect every treasure in the game
Hit an enemy with arcane, ice, wind, fire, and lightning
Shatter 3 enemies with one hit
Beat the game without drinking a single health potion
Cast lightning trap, lightning storm, and lightning bolt simultaneously
Kill a fire sylph and an ice sylph with a lightning storm
Kill 4 sylphs with one lightning bolt
Set 7 enemies on fire at the same time
150 kills with ice
Change every sheep at the tower into a pig
Accumulate 20,000 gold
Kill the Nightmare Queen
Killed by Erline
Freeze yourself with a reflected ice bolt
Repair the sky
Research every potion in the game
Die while you're a rat
Kill the Forest Guardian
Pick up 5 spiders with a whirlwind
Find every ingredient in the game
150 kills with fire
Take damage from a reflected arcane bolt
Kill the Elf Assassin
Open 50% of the chests in the game
Execute the fire/wind/arcane combo
Kill an enemy with a double ricochet
Keep an enemy chilled for 20 seconds
Kill an enemy with shield bash
Kill the Troll in Ordale
Hit an enemy simultaneously with a curved bolt and a straight bolt
Kill the Banshee
Kill an enemy that you can't see with curved bolt