Awesome Start
The frame rate seemed kinda fast, and the jokes seemed to come too fast as well. For example, the guy doesn't need to crash after every obstacle. Try to space the obstacles themselves, and then let actually get over a few. There were creative points with some of the obstacles, but like when he went straight up, it didn't make much sense.
You have a few sounds that are good, but they seem few and far between. Try to find a few more sounds.
I admit the ending was pretty good. He dies in a spike pit and then you get the old finished track music. Brilliant. The only bits that stand out and I would say keep are the one I just mentioned and maybe if you rethink the Underground part (the entry and Mario getting crushed were good).
Hope this helps.