The game got stuck at the end of the first non-tutorial level, I think I killed an enemy at the same time I hit the flag. Your wall graphics look a bit like our games (Strandy's Adventure) that I made, so that's cool. I kinda like the battery mechanic, turning this into a kind of a puzzle. But I'm not sure how well it fits a game like this; in a shooter like this one, one does not usually want to pause the gameplay like that. But a pretty nice game, would be easy to improve on and get some money from I think.