Hi,
Had a chance to play b2 on a full server recently, and would like to let you know it is absolutely fantastic. Good job with the variety of unique environments the cart is pushed through.
Only one complaint, and it's minor: there are two hallways that slightly bother me with their lack of detail. One is the hallway out of the second RED spawn, and the other is the hallway to the right of the 3rd cap. Both are, of course, perfectly functional, but seem sort of out of place with the beautifully detailed exterior of your map.