Quagmire by Jon Davey, WADfile for DOOM 1.666
Just a level that got me into wad building
and to learn DEU 5.21.  I just kept adding
things I liked and seeing if my play testers
could get through them.  There's plenty of
ammo and a few tricks to figure out. Supports
single, coop, and Deathmatch. New demo
included.