In Avengers Bunkers Busters your job is to destroy all the enemies in each level. You start by selecting which chapter you are going to play on and then the level. From there you must select which avenger you want to launch first. Once you have selected your Avenger they will go into the cannon. Watch the cannon closely and click on your mouse button when you believe that you are at an angle that you like. From there you click the mouse button again to decide on how much strength you want the cannon to fire off at. If you get everything right, the Avenger should go flying and hit right into the enemies.