The Courtyard

A standard tech-base map. You will be running around with just the shotgun and chaingun, and other weapons seem to be provided as you will collect ammo for them but they're probably hidden in some secrets I didn't find. You won't need them though, as the map doesn't throw high-HP enemies at you and there are only about 150 monsters in total.

At the beginning you unfold a spiral of lifts and moving floors, which allows you to arrive at a U-shaped span of outdoors where monster invasion happens. Once you defeat that, you must visit some peripheral areas to collect the keys and find your way to the exit. A commendable feature is that areas are being reused and the courtyard seems to be the central part of the map, albeit serving as a form of crossroads rather than the center around which the action revolves. Visuals are decent and exactly what you would expect from a map with this theme.