Here is the full list of all 20 Zombies Ate My Neighbors and Ghoul Patrol (EU) trophies - there are 3 bronze, 8 silver, 8 gold and 1 platinum.
Defeat Boss: Ghost Pirate.
Defeat Boss: Robot
Defeat Boss: Royal Revenant
Sucessfully enter a password.
Let all neighbors die in a level.
Reach 50000 score.
Access a bonus level in Zombies.
Reach 10000 score.
Finish a level.
Save the max neighbors in one level.
Obtain all trophies.
Find all the weapon types in Zombies.
Find all the weapon types in Ghoul.
Access all bonus levels in Zombies.
Beat level 48 in Zombies.
Beat level 18 in Ghoul.
Defeat Boss: Demon Lord.
Defeat Boss: Samurai Ghost
Reach 250000 score.
Save all the neighbors in Zombies.