I really enjoyed the Sparta kick. Amazing :)
I like how the Sparta kick teaches the player how to kick with right-click. Learning by doing is really powerful.
I like how the game is relatively forgiving with the powerups and lives. It's not too unfair, but definitely challenging at the same time.
If I were to try improvements, I think that the jetpack UI could be close to the player so that I don't need to read the corners of the screen. Also, I felt inclined to kick the 2nd enemy, but it didn't feel effective enough, so I resorted to the gun.
The shotgun was fun to use. I used the recoil to dodge bullets :)
The music bops. I like it :)