This game is so much fun, it has a few bad things like jumping problems and running issues; but it's still fun! Love it when the enemy shoots at each other. Makes my job so much easier.
Agreed with almost everyone here, the energy system seems way to short. It goes to fast, and the only way to play longer than 5 minutes is to spend money on this.
Which tons of us don't want to do. Besides the money issue, this game is pretty fun and enjoyable.