Initially, you'll open the first door and see two sets of red squares on your radar coming from either direction. Don't worry, just back up to the door and wait for the Fl'ickta and the Pfhor to fight it out. You will probably be left with one or two Pfhor to take care of, but they should be easier to handle then the whole set.
List of Terminals Edit
If you go back two 'sections' from the rising platform in the clockwise direction (on the map), there is a secret door on the inside wall of the section that leads to a huge ammo supply. (Floating ammo too! This is just cool to see, much less to pick up!)
Marathon 2: Durandal - Level 24: Beware of Abandoned Rental Trucks