Because I already remember a good chunk of this game, not everything is a surprise to me. At this point we see the return of the undead from the first two levels, except now the developers are more clever. The developer of a level has a bunch of good advantages when it comes to designing ambushes in this game. I'd argue that these are much better than the typical monster closets more typical at this point in time. Teleporting enemies, are of course, a cheap trick.
You know, I realized I've come this far and not mentioned the pain system. See, every time you hit something, you activate it. This means that single enemies aren't very difficult. In packs, you aren't assured survival. Packs of trolls and up and you're screwed.
And that's this section of Catacomb Abyss, next, we'll find out what's in that well. Although, I think I already mentioned what that was. Oops.
*Answer, you, if you look in the game files, but do you really want to know the magic?