w to go forward, mouse to fly Use space to summon rockets (costs 100 energy) the boss has multiple fases and you destroy him by slowing him down untill he flies backwards to force him to a wall, or in the second phase, hit him with your rockets.
you may expect this game to take 3 minutes of your time, the first phase is the longest but easiest, the second phase is really short and the third one the shortest, the fourth one is the hardest and most teadious one.