Very Hard mode - Successfully complete the game to unlock the Very Hard difficulty.

Trophies - Successfully complete one of the following tasks to get a trophy:

Astral Introduction (Bronze): Complete Astral Academy.
Tripleshot! (Bronze): Hit at least three different monsters with a single bow shot.
Footskull Fan (Bronze): Kill at least 50 monsters in a single level with the Knight's Charge ability.
Academy Master (Silver): Collect all experience in Astral Academy.
Hallways Master (Silver): Collect all experience in Academy Hallways.
Wolvercote Master (Silver): Collect all experience in Wolvercote Catacombs.
Graveyard Master (Silver): Collect all experience in Dragon Graveyard.
Caverns Master (Silver): Collect all experience in Crystal Caverns.
Crypt Master (Silver): Collect all experience in Crypt of the Damned.
Dungeon Master (Silver): Collect all experience in Forsaken Dungeons.
Castle Master (Silver): Collect all experience in Throne of the Lost.
Forest Master (Silver): Collect all experience in Fangle Forest.
Thicket Master (Silver): Collect all experience in Shadowthorn Thicket.
Ruins Master (Silver): Collect all experience in Ruins of the Perished.
Mines Master (Silver): Collect all experience in Heartland Mines.
Village Master (Silver): Collect all experience in Bramblestoke Village.
Forge Master (Silver): Collect all experience in Iron Forge.
Tower Master (Silver): Collect all experience in Tower of Sarek.
Completed! (Silver): Complete the entire game.
What a View! (Silver): Build a tower with at least 12 Wizard-created objects and stand on top of the tower without collapsing it.
Master Ninja (Silver): Complete 5 swings in a row to the same direction with the grappling hook.
Whoops! (Silver): Kill 3 monsters with a single physical object drop or throw.
All Boxes And No Play... (Silver): Create 500 objects in a single level.
Better Than Developers! (Silver): Complete Tower of Sarek without any deaths on Very Hard difficulty.
Master Collector (Gold): Collect all experience in the game.
What's next? (Gold): Complete the entire game on Very Hard difficulty.
Treasure Hunter (Gold): Find all secret items in every level.
Way Out of the Trine (Platinum): Earn all Trophies in Trine.

Additionally, there are five secret trophies:

Survivor (Bronze): Survive a level other than Astral Academy without any deaths.
Whackwhackwhack (Bronze): Kill at least 5 monsters in 3 second.
I Did It My Way (Bronze): Complete a level with 15 or more character deaths.
Flower Power (Silver): Complete a level without any monster getting killed.
The Cool Way (Silver): In a single level, kill one monster by jumping on it with the Knight, one with the Wizard's abilities, and one with the Thief's grappling hook kick.