Tell more about your sidescrolling game, player move on the fixed line (straight forward and backward), or he can move around like in Georges sidescroller game? I've made some simple AI that move around the level, for fixed on the straight line moving games, some of them even shoot player, you can find them in my project GRAVITY in script. I didn't put them in demo levels (only turrent), I hope that it will help you bro. PM me if you need some help.