Like Xit Vono, I'm also addicted to record Nightmare demos for PWADs, and I played many of the mentioned levels with savegames in the near and far past. Here are my comments for some of them:
Requiem MAP14 -- already many years ago I felt it's by far the hardest NM level in Requiem, and vastly superior in difficulty to TN09 or HN13. But still, desperate work and clever strategies allow a human perform this super-monstrosity of a Nightmare run. I watched your failed attempt, and it showed me that with enough motivation you'll finish this grand challenge sooner or later.
MM MAP28 -- the hardest level in the wad (especially on NM), and Heretic's shortcuts from his 30MM2707 won't help you in a real demo. But I earned some experience in playing this map with "turbo monsters" when doing my 13:39 UV-Fast demo, so I might try it on NM in the future. It seems more pleasant to play than RN14, with more health and freedom.
MM2 MAP28 -- one of my beloved levels, and next time I'll look how it plays on skill 5. I feel it's possible in one or another way.
As for Hell Revealed, there are also quite a lot of holes left. I'm sure that levels 5, 6, 9 can be humanly done faster than in Peo's ancient TAS demos. They should be easier than my HN13, HN14, HN16. And MAP12 is feasible in under ONE FOURTH of Peo's TAS time.
The start of MAP18 is a big shame. Due do the specialities of monster reaction on NM, the cyberdemon doesn't teleport out (unlike on UV-Fast), and instantly kills you, making the level almost physically impossible on NM. The rest of the level is relatively easy, and HR18 is very possible to finish in "alternate Nightmare" mode (UV with -Respawn + -Fast) (even though it won't give you double ammo).
HN25 is pretty easy for a Hell Revealed Nightmare run. And even MAP11 is also more or less feasible. MAP17 seems way too brutal on NM to play humanly (even compared to RN14!), and I think it only can be done with the glide past the red bar (plus the red key grab, preferably). Hopefully there's someone who can do both of these tricks easily (I can't).
And I would say that 7 and 23 are the "most impossible" ones :-)
My Doom speed demos, old and new
Last edited by SAV88 on 01-24-11 at 15:49