if the light is flashing on that bouncing safety wall, that means your gun is pointing at it. don't shoot the safety wall. the difficulty of the game progresses the more targets that you shoot. if the targets reach the back wall then you lose points, same as if you shoot the safety wall. watch your barrel temperature and meter.
there are only three targets in the game. if you have any ideas for anymore targets, just put them down in the comments, nothing living though. also if someone would, remix this and add a ridiculous amount of safety walls, that would be so cool!