Updates on ultra endings:

4.1 - Guidebook states that demon slaying stuff works on Andy. Should say that humanoid works too, and that blessing is recommended. Generally its advised to use missiles, not melee. Standing out of direct line means most of his attacks are useless, and obviously he has no chance to paralyse or stat drain you from a distance.

Should maybe mention that he often summons purple jellies or other chaos critters. Since spells are meant to make him faster it's generally best to have some crystals of fire or a wand of fireballs around to dispatch them.

4.2 - Chaos God ending is also the only special ending possible if you accidentally get crowned chaotic before level 45 (happened to me on my first victory). Under 4.2.1 the PC does *not* need to be wielding the Sceptre when killing Andy for the regular chaos god ending. In fact it's best to drop the bloody corrupting thing as soon as you enter the plane along with the other chaos artifacts.

4.3 - The difficulties of changing alignment are a little overstated these days. Even at level 50 it's easy to get back to N= by saccing single gold pieces at grey altars (with the right precautions of course). Getting to L+ is also very easy if you have a pet and a healing spell. It pays to think ahead with things, but it's really not uncommon for ultras to do this without major trouble. The "update 2002" stuff looks extremely antiquated now.

4.3.1.3.1 - Perhaps worth noting that the crumpled scroll is not waterproof, so if you don't have a waterproof blanket by this stage you may be in trouble. However if you identify it (just 'r'ead it) then you can use magical writing sets to scribe as many more crumpled scrolls as you want! Unfortunately you can only get one trident though...

Another little caveat is that if you want to get a UNE or UCG but don't want to deal with the corruption requirement, you can technically enter the chaos gate as a prospective ULE (crowned L+, no corruption necessary) and become a fallen champion whilst on the chaos plane. As long as you're N or C when killing Andy it doesn't matter if you're crowned or not. This is obviously a suboptimal method though...

A further important caveat is the "chaos wretch" ending. If you kill Andy and are not chaotic and are not wielding the trident of the red rooster then you won't get a UNE or ULE. Instead you get a message about energies flooding out of his corpse and overpowering you, turning you into a miserable and pathetic chaos wretch. Thus it's very important to remember to be wielding the trident when delivering the final blow to Andy (especially important to beastfighters for example). Otherwise you could get what is probably the worst ending possible in the game (yes, I'm still bitter ).