Your mouse will drag the gun. the red square makes TNT Make sure that you drag the gun at the balls. Don't go near the TNT, because if you hit it 3 times, you will be dead! The gun is automatic so you drag it somewhere and it will be shooting. If you see a blue circle, shot it and you'll get a power up that lets you get rid of nasty TNT.
this is only a modification so most of the credit should go to kenzo78910. tell me your highest score in the comments.