WASD to move. Space to shoot. Shoot into the green circle.
LEVEL 1: CHEATING (VORTEX) LEVEL 2: CRIPPLED LEVEL 3: VERY EASY LEVEL 4: EASY LEVEL 5: NORMAL LEVEL 6: HARD LEVEL 7: VERY HARD LEVEL 8: EXPERT LEVEL 9: NINJA LEVEL 10: UNFAIR (ENEMY VORTEX)
