More weaps and upgrades...
Games pretty good i got everything at wave 26.
Only prob is more upgrades and weaps... The minigun hardly helps out fully upgraded because there are like tons of creachers to fight and the more i fight the more slower the game gets for me... and the minigun takes forever to take out the horde... and with the max armor if your cornored then you are pretty much screwed unless you find a gap.
Besides those problems this game is Kinda fun yet like the guy below me said, nothing original.