Had some fun coming up with strategies on this map.

I save green armour in opening for later if needed. I rocket down the first 2 cyber demons to save plasma for BFG'ing the 3rd.

I knew I wanted to skip killing at least 1 cyber demon and the last one seemed to be the obvious choice. I'm sure it's possible to skip more.

I played around with the exit quite a bit and figured out you can squeeze through the bars against either wall. While faster, I couldn't get consistent at it. Easier for me was to die against one of the center bars and sqeeze through to the exit.