Here is the full list of all 14 Pixel Devil and the Broken Cartridge trophies - there are 1 bronze, 2 silver, 10 gold and 1 platinum.
Unlock all other trophies
Defeat the last bosses
Defeat 5 different bosses
Complete Spaceship level
Complete Forest level
Collect 125 PD-Coins
Collect the hidden PD-Coin in the cloud
Collect 100 PD-Coins
Complete Caves level
Increase healthbar with a booster
Collect 72 PD-Coins
Complete City level
Collect 50 PD-Coins
Collect 25 PD-Coins