Had a few games yesterday and saw a few bugs..
1. The shooting yourself with the crossbow one, that has already been mentioned.
2. Once, I won a 3-player game by going into my entrance, even though that wasn't the quest. I don't remember what the quest was though now. I wanted to retry that quest to see if the same happened again but the other players changed it.
3. Similar to the previous... It should probably prevent you from starting a game if the quest is set to "escape via your entry point" unless you set it to need some gems.
4. There was a small room with a crystal ball and a pressure pad, and the pressure pad changed the ball into a pillar?

Maybe that's how its meant to be, but I don't remember seeing that before...
5. If you go into a room you haven't yet mapped, with an enemy (bat, zombie, or other knight) in it, not only is the room not mapped until you kill it/them, but your flashing dot disappears whilst you are in the room too..
6. Wand of undeath has no effect at all on bats.. Is this intended?
7. Entrance/exit squares are shown as "floor" and not "wall" in the map.. Is this intended? May have been like this in the amiga version, I don't remember..