I opened up the game because i thought it was Marvel vs something... (Srsly, the MvsJ thing convinced me xD)
The game was actually called Massi vs Jose, which was a platform game entirely created in spanish.
Actually playing through the game, its actually decent. But i have to point out a few things:
1. Your platform collision system is glitchy. I tried jump from one platform to the other and it glitched me a little down onto the spikes. In order to get to the other side, i had to jump exactly by the edge.
2. The character is good and all but this is optional if you'd like: Could you add detail to the levels and the character other than the bolts? it feels a bit plain...
But this is your first flash game i suppose so all i can say is... Good job