The little blue box is the player. If an attack hits you at any time, you die. WASD to move Q/E to dash Hold left-click to shoot. Fire will be aimed at your cursor. M to mute music. Space to restart. It is recommended to learn this boss's attacks by trial and error.
Thanks too Catsa2007 for the original, Check out his channel: Major league Gaming Pack, this is supposed to be a higher quality version, sorry if some of the telegraphing is strange, I probably won't fix them ever.
