2/10 colors are bland and it just doesn't have a lot of detail.
AND it looks unsuited for a deathmatch. Doors are a big nono, and the lack of objects to take cover behind.
HUGE contrast between the bases. One is overly round to the point it doesn't even look like a structure, and the other is overly square.
The lighting is bad and very uneven. Try lighting from the ceiling and the sidelines rather than the ground.
Colors are bland, try adding some patterns or attempt to set up a "mood" through your color pallete rather than simply using appropriate colors.
Looks too unfinished to be posted here.