Doom 2 Hell On Earth Map15 NoMo100S in 1m55s by Zero Master [COOP] [TAS]
0Runner: Zero-Master
Date: 2019-07-12
IWAD: doom2.wad
Category: NoMo100S TAS
Map: 15
Tools: prboom+ 2.5.1.5 segmenting, XDRE 2.21
Time: 1:55
Description:
Previously I showed it was possible to get the map 15 secret with a pain elemental, however it's possible to get 100% secret on lv15 without monsters as well. Though It does require coop because of the height difference by the stairs, because in the void 2 of the 16 unit steps are not there. So a total of 32 vertical units are missing, and since doomguy can only climb at most 24 units without the use of an arch vile it is impossible to reach the secret sector unless another player activates the switch for the stairs.
In the void doomguy stands on the floor of wherever his center coordinate is located instead of the tallest floor anywhere within his 32x32 unit hitbox. This means that once I move within the secret sector I won't get lifted up to the teleporter sector, and since the secret sector extends through the void it activates the secret.
Another useless trick shown here is that you can go through doors in the void, I could have used another player to open up the door to the secret sector, but since it's 16 units you can apparently just run through it if you go above 16 units per tic. Something like this could perhaps have been useful on E1M6, but unfortunately the door/wall is too thick.
In order to get out into the void I use another player to allow me to build up enough momentum to go through, this could also be done with a monster like e1m8. I do the same thing to get back in bounds, which is why I use 3 player coop so that I can have 1 player in the void to help me get back in bounds. This could be done with a rocket boost, so 2 player coop is enough.
I was hoping I would be able to use this on E4M3 instead, but I am unable to void glide through a wall going west when the angle is 135 degrees. Perhaps it is possible, but after some effort I couldn't get it and so I give up. On E4M3 there are 2 unobtainable secrets, for one of them you can void glide like E1M8 and go back in bounds by using another player (at least I think so, I didn't try it). The idea was to clear everything and get every other secret before doing a void glide to get the last one while another player exits for a true uv max demo.
So at least it shows that nomo100s is possible for doom2, and 1 more unobtainable secret in ultimate doom can actually be triggered, with coop. There is also another unobtainable secret on E4M7 (there's 1 that can be reached with a rocket jump). That secret has the same issue as lv15, but there is obviously no pain elemental and there's also no way to void glide and get to that secret sector.
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