Control

Up arrow to move away from the center. Down arrow to move toward. Left and right arrows rotate around. Z to release damaging particles. X to jump across the screen, damaging all enemies in between. C to attack in a cross pattern, using full charge. When at full charge, your health will slowly come back. Unlock power ups such as health and far better attacks. Enter to start or continue. Escape to quit at any time. P to pause and unpause. Q to change quality.