Use A and D to move left and right. Use W and S to move up and down. You can only attack when the Boss's Power Core is visible.
Well, it took longer to make than the last one, but it still used the same engine overall. Same as last time, the boss artwork is by me. If your computer is also lagging, this is why Scratch can't make full fledged games XD. The song is: Sonic Rush - Metal Scratchin'