i would suggest if you did make a sequal to try making it multiplayer, i would have lots of fun being able to level up and fight agianst other people on this game, maybe not the entire story based on multiplayer, but a multiplayer option of some sort haha
by the way when u first start out the only weopens you should get are the ones tht take up the least amount of ammo(handguns, shotguns, missle launcher, gravity cannon, and once u get a crapload of money to buy ammo the minigun)
man this game is tite ive beeten it like 4 times on all difficulties if you cant beat this game u r a total sissy right now i have 348 gunmen 60 carpenters and 50 silos