Midnight Blue
Probably the best map posted tonight..Another great map from Stephen Ritchie..Two main arenas that have great construction techniques written all over them. Large enough that 2 to 3 marines it would be slow. Ammo seems well plentiful at the beginning...but if you don't play with "dead players drop ammo" it might get a little thin. Download this one to see some great construction ideas...
Levels in map "Midnight Blue":
Midnight Blue