Hi! you will find that section is updated, thanks again for your help!
Viewing post in Borble's Quest jam comments
I saw your explanation in the other comment and went back to try again, managed to beat the dragon with 5 coins on the original build before noticing this comment! Very good game all the way through.
Tried the new build now too, the spike section flows much smoother and feels like a good update. Got to the dragon though and the glitch like in your devlog video happened to me D: