Here is the full list of all 14 Parasite Pack (EU) trophies - there are 2 silver, 11 gold and 1 platinum.
Unlock all other trophies
Beat Flea Boss 1
Beat Flea Boss 2
Beat Flea Boss 3
Beat Flea Boss 4
Beat Flea Boss 5
Beat Flea Boss 6
Beat Flea Boss 7
Beat Flea Boss 8
Beat Tapeworm Boss 1
Beat Tapeworm Boss 2
Beat Tapeworm Boss 3
Beat Tapeworm Boss 4
Beat Tapeworm Boss 5