Congratulation. The game looks very very good indeed. Do you plan to release it on Steam or similiar?
I have one question. I believe this game tries to give a NES or SNES vibe to it, and I take it from the tilesets mostly, and because of the bosses. However, some of the mechanics, like the particle effects of the jetpack or the double jump, seems like a more “recent” game.
My question is: are you trying to create a “new style” by contrasting those things, or aiming at a more retro old style aesthetics itself?
Again, congratulations for this game!