Great movement system, it was a lot of fun just drifting around object and dodging enemies. Enemy AI felt pretty good too, I really like how they actually act as a swarm. Overall great work!
Only complaint is I feel like the special charge attack wasn't particularly useful. At first I didn't even notice that it was shooting anything, since the shot sort of merged with my regular bullets, so I thought it was like dodge move (which, granted, it was very good as a movement mechanic, I got a lot of use out of it that way). Maybe the laser could have gotten wider as it travels further out from the player to hit more enemies? Or it could be a simple shot-gun attack. Either way, having it be a single, straight beam doesn't really work well with the swarming behaviour of the enemies.