CLICK THE GREEN FLAG TWICE!!! You can upgrade speed, and damage. You get two lives. For each tank you destroy, you get $15. You can spend it on upgrades. The level is shown at the bottom left corner. It will keep track of how many tanks you have destroyed and how much tanks you have to destroy to get to the next level. Once you get to level 2, you can upgrade the shell to a bomb that explodes once touching the ground. It is usefull when you miss a tank, because it will explode and any tanks touching the explosion will be destroyed. Once at level 4, you will unlock your super weapon. It will destroy all tanks. But be carefull and use it wisely, because you can only use it twice.
