Left arrow=turn left, right arrow=turn right, down arrow=go backwards, up arrow=go forward. Space=shoot. Down-right corner=your hitpoints, up-right corner=your enemy hitpoints. Shoot the enemy tank to defeat it.
You'll start being in the X:0, Y:-150. You'll have 1000 hitpoints and your enemy will have 5000 hitpoints. Shoot the base to slowly defeat it! It will always shoot at you and enemy tank will make sure you're dead!!! Just shoot at it or play tag! If it won't catch you, it will disappear!!!