Duuuun dun… duuuun dun…

Take a snack

Obtain the Sports Watch

Enter the graveyard without giving the trinket box to either Pierre or Bernard

I need your strongest potions

Buy all the gun accessories at a pawn shop

Open fire on an enemy and finish him off in melee combat

Examine all the Parisian Ghetto maps

Surprise the boxers

Be rude to Mlle Carvier and clean out her apartment before the police show up on the floor

Don't let the rat packs bite you through the whole walkthrough

Take every collectable item in a single walkthrough