its a gun that shoots lasers which are green (they make light) are pretty fast, slow down the robots and go through enemies and add blaster bots too. Upgraded lasers could have a green fire which would also slow down the robot. You could also choose to charge or just shoot a laser. OR EVEN MAKE THE ROBOT GET ZOMBIFIED SO HE FIGHTS FOR YOU AND GETS CARRIED AWAY BY THE GARBAGE BOT AT THE END OF THE ROUND (FINAL UPGRADE). ALSO SLOWING UPGRADES
acid laser gun blaster thing.
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