Here is the full list of all 11 Interfectorem trophies - there are 5 bronze, 5 silver and 1 gold.
Beat the game
Toss an eclair at someone that deserves it
Find Alis' water bottle
Lose in battle to the Wood Nymph
Find a journal you shouldn't read!
Um, talk to the witch?
Begin the first act
Begin the second act
Begin the third act
Begin the fourth act
Begin the fifth act