The dead end I believe I found had 'this is your grave' written on a wall, or something to that effect, but it was in the old version, so I don't know if it's been fixed.
Also, in the new version (that I downloaded because even though I don't have time to debug other people's dungeons I still want to play,) I realized that bringing in a maxed-out character only takes the difficulty to 53%, and maxing out the hidden stats (9999 all the way, baby!) doesn't change anything to it, so I'm walking around with an almost unkillable one-man show and pulverizing everything in my path. This ought to be corrected, evidently.
Another glitch: some champions have equipment, but since the game only take imports, that equipment is lost upon entering the dungeon. Try looking at the CSB dungeon to see if you can figure out how the 'save-in-prison, reappear-in-dungeon' is done. I looked once, but couldn't find the mechanic. Drop me a line if you do find how it's done, it's a pretty cool effect

Also, the spellbook (assuming there is one!) is hidden too well, IMHO.
The hell hound puzzle behind the onyx lock is logical but poorly implemented. If the correct action is taken in the wrong place the hellhound cannot be moved anymore. This may be because of what happens when the alternate form gets killed, but I don't want to say too much so I don't spoil the puzzle for others. Oh, and since it's meant to be unkillable, make the hellhound invulnerable, please, you're just confusing people letting it soak damage.
I'm not actively hunting for bugs, for there is at least one torch-eating sconce remaining. (I could tell you where, but then you wouldn't check them all.
