That was fun! I especially like the movement and the crashing mechanic. The lock-on feature is a superb decision!
There could be a HUD element to signify the cooldown between shots, since it's based on shot frequency.
The audio is a little imbalanced. The shooting sound is a bit faint. The music overpowers the mix a little. The "level clear" sound is a lot louder than everything else. The audio is also a tiny bit loud. Not by much, but the music + thrust + enemy hit sounds threatened to peak above 0.0 dB consistently. When combined with the "level clear" sound, it peaked above 0.0 dB.
All-in-all, great work!