Kozney's Castle, Third Floor
I really need some help with this... I've cleared my way up to the room that's blocked by an energy wall and has six switches in it, with the ordinals "first" through "fourth" on signs at different corners. I've tried all combos I've been able to think of (one of which is just using the four levers next to each sign, in ascending numerical order), but no luck.
Not sure if this is related, but I also can't get past the wall to the east where a sword (that sword??) can be seen on a shelf.
Also, can't destroy the two spiderwebs that Agent K. says can be destroyed with fire spells. No spell works.