Use Running to fight pretty much anything except Former Sergeants.
Still trying to beat this impossible challenge, and...is it me, or this tip is not exactly logical ? Do you really want him to actually have MORE shots at you, since you wont be running at him ? I assume here that "running" actually increases your speed ? He'll hit you anyway, so whats the difference ?
so kill as little as possible until you get the chainsaw. When I say kill as little as possible, I mean don't kill anything that isn't standing on top of the stairs, dammit
Then this piece of advice. I seriously doubt it. It seems to me, that if you kill as little as possible - your survival chances are significantly lowered, because if you dont get Brute2 and a piece of armour before level 3 - you're pretty much dead anyway. Imp bands and even lonely demons will shred you, considering that CC can be as far as level 7 sometimes, and demons appear at level 4, i think. And to get Brute2 - you seriously have to kill a number of enemies.
Crap, out of 60 tries i only got to chainsaw twice, and even then only got as far as level 9, in previous version i finished AoB three times...those were the good days...
At least now you very rarely appear right in the middle of lost souls convention, even though it still happens much more often than i want it to (i.e. never).