A to move left D to move right w to jump space to shoot You play as the smaller blue robot You can't see the boss health. Instead it is shown by the visual damage to the red robot boss. When the program stops that means you have killed the Boss or you have died (I didn't have time to make a death animation)
This was made in 1 hour as a challenge to myself to see how well a game would like if made in such a small amount of time. This game is the result, and it's... interesting to say the least. Enjoy! (The thumbnail was made after the 1 hour was up)