I'm a bit worried about that elf bussiness, that there's nightmare territory. I think that was an old PQI of Tinker to which she responded with "go away PQI, you're drunk" (if I remember correctly, not sure), and that makes her no less of a grade A asskicker in my book. I think she also did it later on, and I think it's doable but... there's a thread I can't find due to the forum search being messed up where you got a who's who of old veterans all agreeing on vicious steel monk being the hardest run in the game. I'm not sure we were really up to speed with all the options, there's always a meta and there's always groupthink and false assumptions and vast quantities of noobdom you only discover after some time, but, err, it's wasn't a far off assessment.
Getting a gobbo monk (don't remember the badge) through there on the last playthrough (twice in a row by accident) was quite traumatic for me and I resorted to quite a bit of stuff that's overkill otherwise. Still, I hadn't tried some of the best Vicious Steel stuff during those attempts (and Monk, bless his broken regen fighting soul, is probably the only guy who's just not that good with Pissorf, too).
So if anyone's hungry for challenges, tackling that one might be just a tad too insane. Or not, but I wouldn't want to go into spoilers territory concerning what I'd use if someone wants to get it done and swagger around mad with power and self confidence afterwards. Would be well deserved even with outside help IMO, so if anyone'd like I could spoiler tag it.
I could also bust out a spoiler tagged bit of info on WHY that place is so terrible from a historical perspective, that "vets grumbling about it" thread ended up on a pretty unanimous conclusion that the place could use a nerf for some solid reasons, I find it an interesting story. I do remember one of the best guys ever, guy called Wald0, saying with utmost conviction that Monk and Vampire Vicious Steel were the hardest of his full rainbow runs (including VGT ones), and he wasn't talking about purist monks with a race he wasn't accustomed to, either.
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As for the halfling - well, there's something that you can approach from several directions, say that the badge is bullshit-proofing enough and hit it with your best shot and still feel like a complet boss for getting it done (and a possible conclusion that there's more to the little bastards than they get given credit for most of the time). I've done a fair bit of PQI Halfling Warlords with seemingly crippling badges, and if you're the sort of person that could make use of a bit of warmup, doing a few rounds of grims grotto with the same setup is probably a good idea. If anyone's up for that achievement, I probably got tips on them too.

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