Neat game! Controlling three of your clones at once is challenging but fun. There were tense moments were I was swinging my dudes around wildly to try and get a powerup while also trying to dodge. The music is perfect for this kind of game. I really like the phase shift animation/effect that happens in the background. I also really like the little detail that the three player sprites cast shadows behind them, nice touch!
I know you called it out in the description, but the powerups could be a bit more prominent. As the game progresses the colored dots around the screen also kind of make things hard to see. But those are just nitpicks, well done!