JC
* Complete Angel of Purity on Nightmare! with 100% kills.
* Complete Angel of Haste on Nightmare with 100% kills.(can't think of anything harder yet possible than this last one) :P
* Kill JC using your fists. This one is for Blade :P.
Has anyone ever beaten any form of Nightmare with 100% kills? Don't resurrected enemies count against you? You'd have to nuke/flood at least 24 floors! Or patiently let enemies resurrect, lure them to doors/other corpses/stairs, and delete them that way one by one. And farm enough ammo to sustain this.
AoD - EASY - not hard, just annoying
AoMr - MEDIUM - somewhat more difficult than vanilla - no rapid weapons, no rockets, no bfg
AoH - MEDIUM to VERY HARD - depending on difficulty level
AoRA - EASY/MEDIUM (for a Nightmare player, as they are used to moving fast) - for players at lower difficulty levels, may be a much greater challenge than vanilla because they're used to methodically clearing out areas
AoMC - wouldn't know
Ao100 - VERY HARD/BLADE - while you have chances to recover from mistakes, deeper levels are really dangerous if you're not super-careful - there can be truly ludicrous amounts of monsters on levels 80-100 on Ultra-violent, and even more so on N! - just look at kill counts on the mortems
AoPw - wouldn't know
AoD&D - MEDIUM - basically you are forced into (lots of) eagle eye and ironman (but without unlocking intuition/cat eye), works well with rapid weapons
AoLT - MEDIUM/HARD - safety net is much reduced, can't carry as much of a buffer in ammo or health recovery
AoB - BLADE(?) - I haven't figured out a good way to beat this yet
AoP(urity) - HARD - some recovery removed, durations for berserk and invulnerability are pretty short on non-N!, I don't miss them that much (I miss them on N!, though, miss them very much)
AoPc - VERY HARD - I haven't mastered this at higher difficulty levels
AoI - MEDIUM/HARD - can't save health for a rainy day/sticky situation
AoMs - VERY HARD/BLADE - one mistake and you're on thin ice. Another - toast. Can't shrug off minor hits like you can in normal games because there's usually at least some health available on each level to compensate for it. As with Dervis, I can't imagine tackling this on higher difficulty levels without Cat eye (the benefits of Intuition come much later).