Aha, gu-gone is more Nemesis stuff. Eventually this and the new DB combos will all be part of SmartStasis and/or BatMan. Unfortunately, I've had about 5 free hours total in the last week and haven't even had time to play KoL, much less work on scripts.
Monsters that require particular amounts of damage to be dealt to them will not be handled in the first release of BatMan. The primary goal of the first release will be debugging and achieving stability. After that, special algorthms can be added in. I'm thinking of hobos (overkilling for hobo parts vs. not), Mother Slime trophy, minesweeper crabs, and combat actions that give special benefit if they kill the monster (like using your Gnomish Hyper-whatever it is, to get the handy effect).