It's a bit touchier than I like these days....but if you play on the easiest setting, in first area (ar0602), you should get the acorns there because ilych won't vanish. If you play on EASY (second setting) or up, Ilych vanishes before being killed and appears on the second floor.
Now, let's say you were set on EASY on floor 1, and Ilych vanishes. If you go to floor 2 (ar0603), and have switched to EASIEST before going there---you could cause Ilych not to appear. i.e., Him not appearing on level 2 with your acorns. This is a bit clumbsy, I admit--but most people don't switch the difficulty slider every five minutes during play, so it's usually safe. In fact, this might be the only situation you could break your game by doing so.
If you fall into this trap, and you don't find Ilych with the rest of the duergar on floor 2, you can cheat him in w/ CLUAConsole:CreateCreature("DUECLA02"). Actually, if your game is broken, it's not really "cheating" it's "fixing".
I'm considering other ways to handle the BP creature additions than with the difficulty slider, but for now I can't think of a better way you can adjust while playing. If you use the easiest setting on the difficulty slider, it's assumed you don't want a tough game and it won't add any BP tough encounters at all. You can change this at any time by-area, because BP's creatures are added when you load an area for the first time in almost every case. It has the downside of things like Ilych here, but they are rare cases. The upside is, you can turn BP on and off at will in middle of your game.
The above paragraph just applies to creature "additions". If you install BP, you get the BP enemy AI for all the game. In a few special cases you might not get the nastiest spells thrown at you on easiest setting, but that's about the only break you get.
Hmm...since this is the only case I can think of where it can break your game, maybe I should handle it w/ a global variable instead of the slider. Just Ilych's appearance, I mean.
EDIT: All done, for upcoming BPv181. If Ilych vanishes on level 1, he'll appear on level 2 no matter what you do w/ the difficulty slider. Thanks for bringing this to my attention ojbllny!
Edited by horred the plague, 15 November 2012 - 04:02 AM.
got an idea after drinking morning coffee, then implemented it