There is something very satisfying in leading your shots and hitting your targets. The controls are smooth which makes combat very nice. One improvement could be better visual or audio feedback when the red lines start to close in since it is such a big part in the core game. Also, the crystals that spawn after destroying an enemy could use a bit tweaking so they are a bit easier to grab. Perhaps slight homing behavior. It also would have been nice if the powerups had a longer duration. Alot of the time, the powerup ended not being used as much due to waiting for the next wave to spawn. Other than that, I would like to see more work on this, I really like these types of top down shooters.