Here is the full list of all 26 Intrepid Izzy trophies - there are 12 bronze, 5 silver, 8 gold and 1 platinum.
Get all other trophies.
Complete the game.
Upgrade your health to the maximum number of hearts.
Find all infinity mirrors.
Defeat 100 enemies.
Defeat 1000 enemies.
Collect 500 coins.
Defeat three enemies in a combo.
Clear the infection.
Converse with small animals.
Find all the hidden mollusks.
Defeat Plantman.
Defeat the Minotaur.
Defeat the Skeleton Warrior.
Defeat Yzzi.
Defeat the Leviathan.
Collect the vampire costume.
Collect the squirrel costume.
Collect the miner costume.
Collect the ninja costume.
Collect the disguise.
Juggle an enemy.
Hit an enemy using another enemy.
Get the highscore for Plerg!
Get the highscore for Ultra Bazoop.
Get the highscore for 3D Wheel.