The goal of this game is to survive the approaching enemy waves while breaking the flags on the caves. The units you can create are based on a rock-paper-scissors-system. Pistol Guy -> Rifle Guy -> Drone/Tank -> Pistol Guy You order units onto one of the five lanes by clicking on the arrow buttons and choose the unit type by selecting it on the left edge of the screen. Press [SPACE] to activate the artificial intelligence when your "training" is completed. I'd by the way prefer to restart twice before pressing [SPACE] to avoid gliches. To clarify: You don't haveto wait for the intro texts to disappear before playing.
The music used in this game is "Hitman" by Kevin MacLeod and availiable on incompetech.com . Somehow it's not working right now. I'm going to fix it later.