Tanks! glad you liked it! :D
And yeh; the main idea was for it to be a sort of metroidvania/roguelite, where you explore the map to get upgrades and then fight the boss until you get knocked out of a sky island back into the map, were you can find more upgrades, but I couldn't do it I'm weak =~=
The stars you get are a remnant of that concept; they upgrade (too slowly) your swing speed or strength, but it ended up reeeeaaaally half-cooked º^º