Lots of fun! It reminds me of the dash from hollow knight - especially the parts when enemies are walking over spikes and you're hopping on top of them.
I think the game's strongest when rocket bird is airborne - really like hitting multiple enemies in one dash to clear big distances. I'm imagining large airborne areas where you have to follow a long path of enemies without ever touching the floor. Then maybe adding a combo system like... every extra dash you make without touching the floor makes the dash longer or faster. You could even have levels where you have to combo chain a bunch of enemies until you build up enough power to launch yourself over a large empty gap.
Could defo do with some kind of rocket-ready indicator. Maybe just some visual cue from rocket bird when he's ready to boost.
Cool stuff!