Good Concept
I like the idea, very much. It was fun, I scored a 51 because I suck. I wish there was a colum for originality, but there isnt so I gave you a 10 in style.
I do have a few complaints though.
The game gets pretty boring with the same old level and stupid spikey thing that pisses me off.
The spikey thing doesn't even have to touch you for you to get hurt. I was getting more coins without touchng the spikey, yet I was losing health. Kind of frustrating. It just has to get close enough.
I say for the next version have different levels, different coind values and an improved damge system. Overall you have a good idea, it was fun. Which is more than I can say for some of the games on Newgrounds.
Good Job! (4/5)