Earn all other trophies
Complete the tutorial
Complete "Little Invaders" chapter
Complete "Nocturnal Experiments" chapter
Complete "Hell's Kitchen" chapter
Complete "The Disclosure" chapter
Complete "Stairway to Death" chapter
Unlock a level with 3 stars
Purchase a weapon upgrade
Purchase a special item
Purchase a skin
Purchase 2 weapon upgrades
Purchase 2 special items
Purchase 2 skins
Defeat the Giant Flambido
Defeat the Giant Toad
Defeat the Living Oven
Rescue a classmate