WASD, Space or up, down, left, right arrows and space to play. Play until health bar vanishes. Collect circles. Dodge and shoot squares! You need three hits to speed up gameplay... Green bumper does no damage. Hints: collect as many bullets as possible...destroy rocks. Press s (show) and h (hide) to see the high score.
Thanks to eventexception for the main project. I only added the arrow keys.