The Catacombs is like the easiest part of the game if you use a couple convineint shortcuts. Only real issue in getting to the boss(who is beyond easy btw) is getting past the first group of skeletons/necromancer and getting to the chasm area. Once there, kick the few skeletons off, and run up the bridge. Before goin in, turn to the side, theres a bit stciking out, you can roll off there to land a good bit down, but beware the exploding heads, and as soon as you land, a couple feet to the side is anther drop, and you can see an item corpse down there to know where to fall, drop there, and another, again with an item, and make a mad dash for the boss room.
I am the most fiendish terror that flaps in the darkest night. I am the skunk that pollutes your air. I am Negaduck!!