Nice work!
Nice work on the game. Graphics are decent, weapons are plentiful and full of variety, etc.. I liked the equipment and the exhaust venting feature. I played a little like a rookie, but I have no complaints about the game, with the exception of the store. I found no strategy behind the things you purchase except to buy the store out. I would suggest maybe increasing the price of all store items so that a person can not buy out the whole store, rather they must choose carefully their purchases so they may use them in a strategy. Otherwise, you become nearly invincible.
Overall:
Good game, nice design.