As far as a game jam game goes, this one is really well polished! Very impressive effort, stuck to the theme "out of reach" very well - good balance of frustration and progress as you manage to finally reach those coins. Good sense of accomplishment when you've finally climbed to the top.
All in all, can't find much fault in it - besides a lil bit of a stick on the edges of platforms when jumping up (but I'm sure that's just a time constraint issue as 3D platforming physics can be tough), and perhaps the concept isn't 100% unique - so a point taken off of "original prototype". But with the narration and everything, it definitely still came out as a nice original experience.
Would love to see more of a game like this in a bigger world!