I've been working on some updates to the interface to get rid of that ugly gray box at the bottom left of the screen. There's also a sort of pause menu now where you can drop out of the game and back to the title or change your color and all that.
I still need to redo the shop interface because in its current form it's just too confusing and it doesn't relay enough information. You can't tell what weapons you're rebuying, you can't have it selectively rebuy only one weapon, most people don't even know you can sell your weapon back, etc. Basically all the changes are aimed at making the game more user friendly, you should be able to understand everything the first time you look at it.
I talked to Superantx awhile ago maybe like 2 months ago he told me he is working on the full version of the game like Version 1.0 or something and when this game was up I think the version was Alpha so you guys have to wait awhile Superantx and his team are trying to make this game perfect.