a) Fight gargoyles, golems, undead warriors and other monsters in dungeons riddled with traps.
b) Use weapons like the elven wand, ethereal crossbow, dragon claw and best of all: gauntlets of the necromancer.
Alright, its gotta be Heretic.
The first hint was a bit too vague, got me thinking it was Castlevania or something of the sort. =P