Do you plan to change the controls? It's pretty much impossible to finish as of now, because you combined 2 hard to controls mechanics at the same time: flying controls by rotating and aiming in 3d with 2D graphics. If there was only one of those 2, the game could be playable, but the 2 combined make it impossible: going through the circles are pretty difficult and avoiding the shoots is just going up and down in a corner; you keep missing the planes because you can't judge correctly how far the planes is.
If I am missing a point, tell me, but for me, passing the first part is already a miracle, so the second part is just a dream