The game was fun and not one i see often it would be nice if it was longer though, as far as bugs i i found i would often pass through walls instead of bouncing off them. as far as suggestions for improvements other than more levels would be a more involved story line maybe add a re spawn to the enemys , you could easily make this more of a pinball rpg rather then a simple click and shoot by adding bosses gear or even exp orbs that drop with the money to give a incentive for players to kill as many as possible