first reaction: oh groovy title music <3
im not sure if its intended or not but you can jump/clime up the sides of leges and ill be brutally honest, the games just very very unpolished. the lack of doing a smaller jump when you just tap the button really is a game killer it doesnt feel as if i had much control. at first when i hit the reflector it was a bit of a shock and died almost instently due to it, maybe a bit of an animation will help with this. i do think you should have focused on gameplay than adding things such as Shops and items, most of them i didnt find that helpful and a lot of the ones in the shop i felt like they hinnded me than helped me and then there is a fact you compleately restart after your die it kinda feels like my last go was pointless and sort of makes the player leave the game with a negtive taste in there mouths. 

It's a good concept