This is a draft featuring about 75% of my latest project (10 phases). Arrow keys to move, A and D to aim your bullets (green bullets automatically target enemy), hold S to slow down. For practice, you can use the space key to set the boss's health to 1, thus triggering the next phase. Press 8 to set your health to 128 (only works in first 2 seconds of the game) The black dot in the middle of the green square is your hitbox. If that touches a bullet, you lose 1 hp and gain some invincibility frames. You start with 8 hp, and if you reach 0 hp, you lose.
My profile is littered with bullet hells... -fixed bug where you can go in the gray area
