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A cool upgrade shooting game, do your best to eliminate each and every target on every level before they kill you first. Earn money to buy cool upgrades and become unstoppable. You will stand your position inside of a building, shooting at enemies inside a building right in front of it. Try to shoot fast and move to other windows to trick your enemies and have better shots. Do you think you can clear all stages and unlock every one of those helpful upgrades? Try it now and have fun playing!.