Aliens vs Predator 2 singleplayer custom map titled "Hades Facility II" aka "Marine Hades".
Map author: Alexandre "Lord_Hades" Vancomerbeck
"Once in the Infirmary you'll have to find a way out and escort them to the APC ,if they are already dead ,just get the hell outta here..."
Hades Facility II is the second entry of a series of maps built on the same map. In this sequel, the player takes control of a corporate entering the same facility the predator was just in. The level design is exactly the same as Hades Facility I with the exception of some left over damage caused by the predator. This time around all the enemies are aliens.
Personally I think Hades Facility II is the best in this series of Hades maps, partially due to me preferring the human gameplay, but also because this map seems to be the most polished. There is also a great sequence when the player has to retreat back due to a flood of alien drones. If you're going to play only one of the Hades maps, I'd recommend this one the most, but check all three out.