Wtf, okay, ive done the chapter 5-3 , 3 times, all difficulties, and still, this trophy is not unlocked. Anyone know why?

Nah, ive done it both ways, im sure i have, nothing, there must be a certain way, its starting to annoy me =/

I actually just got it, after the 4th time. Nah i do it offline, and the heart stopper? If your having trouble getting that, you know in 5-3 before you go into that room with jill? Go up the elevator thing instead of sheeva, use the grenade launcher,m but with acid ammo, and shoot one of the dogs, it will choke on its back, giving you chance to stab it ;p