Thanks for playing through the whole game ! Its definitely a bit rough around the edges, it was a short uni project from way back I just fixed up quickly and uploaded now.
The game was actually maxed out at 88%, I didn't realize it until you mentioned it right now, so I went ahead and fixed it, now the counter does reach 100%, you'll need to load into your save and save again for it to update. The counter used to only count upgrades found (but was counting one too many), now I made it also count the hearts you found.
Anyways, thanks again for all your valuable feedbacks, this prototype was actually never play tested before