Shows that it's possible (though not always easy) to jump across the gap that seems to block access to the exit switch in PC Doom/Ultimate Doom level E1M9, Military Base. This can allow a player to skip past a few monsters and a damaging floor.
In this video the gap is crossed using two methods: First via standard Running, which is not recommended, since it's quite easy to fall short and drop into the corrosive below.
The gap is then crossed by Strafe-Running, using a simultaneous combination of Run-forward and Strafe-sideways. This technique moves the player character at an odd angle, but at a slightly faster running speed.
Notes on the making of this demo: I played in single-player Deathmatch mode to allow me to start the game with all the keys.
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