Demo: d1s-sw (07/11/1995)
Skills needed: good timing is essential
Difficulty: easy, however you cannot try twice

Description:
This trick originally appeared as a free interpretation demo in Steffen Winterfeldt's DOOM Schwarzenegger DHT exam. It shows a really cool use of the rocket launcher, as it can make leaps like this easily possible. The level seems to be designed for the trick: the soul sphere and the rocket launcher together, and the walls on the stairs set up the trick nicely.
This trick was mainly used in NightMare speedruns but is rarely used today since it was replaced by other ones.