Thanks for playing it through the end and giving your feedback :)
Yeah i kept the powerup spawning a bit fast as even if they are useless once you get to your chosen ship's max level i felt that this would be useful for multi so that players didn't have to fight over upgrades too much, and the difficulty is quite unbalanced as i once again didn't manage to get enough time to do some more tweaking and adjusting, but since i got everything to at least work without too many hiccups (at least that i know of) i can always do the adjusting for some post jam content if i get the time to do so :p