thealienguy: Now not leveling up either your characters or skills, that I would believe to be extremely hard if not impossible. With extreme use of wands though it may be possible. Hmm, maybe the next time I play after my current play through, I might try it.
Bookwyrm627: I'm not sure it is possible, but perhaps if you stacked enough wands. If it is, there are a number of areas that at that would be so very, very tedious.
There are several points where you have to kill enemies, and you don't have infinite room to run. I don't think Dark side is possible for a Level 1 run; the Breed Grounds are just too tightly confined, and the enemies will blow right through your pathetic HP. The Blaster Guys, with Power Cure, are another potential game stopper.
I'm thinking about different areas, and even if it is possible, it seems like too much work to be worthwhile. You'd have to farm 2 year area respawns (or the 6 month Barrow Downs) for gold to buy the scrolls and wands that would be necessary.
The Nighon tunnels and tunnels to Eeofol would also be insane to get through. I'm more curious to see how far I can make it, more than beating it. Yes, it will take awhile and I'd be taking a lot breaks due to frustration, too. I may attempt it some day, just not anytime soon.
Bookwyrm627: The Blaster Guys, with Power Cure, are another potential game stopper.
rmeakins: It's possible to use Invisibility and Stealing to grab their Power Cube without needing to kill the Blaster Guys.
I think Xenofex could be a problem? Could try to use Haste potion + blaster to defeat him, but the devils are likely to do a fair bit of damage first. With Day of the Gods, high Luck and Body Building it might be fine.
The Lincoln could also be tricky, those robots do lots of damage. Lloyd's Beacon would make it easy though.
All in all it doesn't sound impossible to do a level 1 run, but it might make the game so tedious as to make you give up halfway :)
If you're leveling up your skills, then it is very possible to beat at level 1. But I mentioned not leveling your characters OR skills. You would be completely reliant on hirelings, wands, and scrolls for all your spells beyond the basic ones. You would also need rings, amulets and armor that would bolster your skills, and stats. Most of those would need to add 10+ to be of any real use. As long as you can get enough invisibility scrolls, it should be doable, albeit very tedious and annoying.