Nice!
Bug: Buying primary ammo without a primary weapon causes a crash.
You need to make the map selection menu scroll, otherwise there's a limit to how many maps you can have.
Shotguns are a bit underpowered. If you stand right in front of someone with full health and shoot with a shotgun they should die.
There should be a money system to go with the buy menu.
Scoreboard says "test" on it.
You shouldn't be able to buy weapons anywhere. No need to break the map format; just make the buy zone a few tiles around your spawn point.
Old suggestion: Ability to play on terrorist team, with different weapons in the buy menu.
EDIT: I'm trying to update UCSPSPE to add support for the new weapons, but the weapon ID's no longer seem to follow the order in which they're defined in guns.txt . Do you have a complete list of all the weapon ID's?