good game, but...
no doubt the game has huge potential, but i would like a few things added if u make a sequal:
auto-reload=for the obvious reasons
cheaper prices for shop items=much too expensive ATM
more variety of enimies, such as fat people which have more health but are very slow :P
a variety of weps like gatling guns or sniper rifles
a chance for enimies to drop power ups like infinite amma for a period time
a boss every few waves (i didnt finish the game, too repitive srry, so dont know if there actually was bosses) like a person who stole a tank, or people in body armour who take longer to kill
and of course= a story line ( u can think of tht urself ;) )
as u can see there of a lot of improvements which could be added, I do hope u add as many of these as u can, and some of ur own of course.
Overall, decent game, nice little time waster if u have 5 or 10 mins to kill