Here is the full list of all 45 Nuclear Throne trophies - there are 31 bronze, 10 silver, 3 gold and 1 platinum.
Play as Frog.
Defeat the Technomancer as Steroids
Reach 2-1 on Hard Mode as Chicken.
Defeat Captain as Rogue.
Defeat Captain.
Unlock Hard Mode.
Defeat the Technomancer.
Sit on the Nuclear Throne as headless Chicken.
Defeat Mom as Rebel.
Defeat Hyper Crystal as Horror.
Reach the Nuclear Throne in under 10 minutes as Plant.
Reach the Nuclear Throne with Melting without choosing Rhino Skin or Strong Spirit.
Unlock a Crown as any character.
Defeat Hyper Crystal.
Loop as every character.
Reach 7-3 on a Daily
Defeat Mom.
Eat a Hyper Weapon as Robot.
Reach the Nuclear Throne.
Reach 4-? as Crystal.
We hereby sincerely apologize.
Reach 2-? as Eyes.
Reach Level Ultra as any character.
Loop past the Nuclear Throne.
Defeat Throne II.
Loop the game.
Defeat the Nuclear Throne.
Reach 5-?
Reach 6-1.
Defeat Lil Hunter.
Unlock a Golden Weapon as any character.
Defeat Horror.
Reach 3-?.
Reach 5-1.
Defeat Big Dog.
Reach 3-1.
Die.
Reach 2-1.
Defeat Big Bandit.
Completed Every Challenge We Could Think Of In Nuclear Throne.
Unlock a Golden Weapon for every character.
Unlock a Golden Disc Gun or Golden Nuke Launcher.
Reach Level Ultra as Skeleton
Unlock all Crowns as one character.
Get 100% of the unlocks.