Very fun, lots of mechanics to explore. Good progression system! I like how all the necessary info was succinctly given to the player, and other mechanics and interactions were left for the player to discover(eg., the phase walk ability allows you to phase through the black hole and come out the other side with momentum. I wouldn't have figured that one out w/o a friend). I like that the refactored hyperarmor changes the player model. All of the abilities are fun to use, and the upgrades as well. Having to learn that going right is most effective, and then using the dash and double jump effectively, there was a lot of "secondary" skills to learn(eg, skills that can't be explained, but you need to learn from experiencing the game). That makes for a more complex and a more long-lived game, in terms of gameplay loop. It would be neat if there was something on the very edge of the "map" that you could collect, or that would bring you to another location? Not sure. I think there is good potential for more development, or even a bit of a story to go with it.

Quite unique idea for a game
I thought it was really impressive you could add in a full upgrade system too, given the time constraints

probably my favorite game, nice work! i really like it, hope you continue to work on it after the jam ends