I am having trouble getting anywhere with this level and the spoiler doesn't seem to help me.
I enter the level, blow away the troopers, find the twin doors behind the 'stage-like' area and blow away the blocking bob. The the passageway seems to lead either left (to a locked door) or right to a control room place with goodies, a dead bob, an air recharger and an upward shaft. I go up the shaft but it doesn't seem to lead anywhere. Something I pick up in the shaft (inventory doesn't seem to reveal what it is) turns my vision red but swimming around everywhere with the red vision doesn't seem to reveal anything new.
I have also discovered an opening and closing blast door leading to another control room but it doesn't open high enough for me to get in. Any help anyone?
P.S. Rubicon is an awesome game which is bringing back the glory days of Marathon for me - Thanks!