My first playthrough I managed to beat the first boss with 1 life left. I then jumped over the pit he had cut and fell into it somehow. Even though I had already beaten both bad guys it made me start from the beginning. I didn't mind really. But when I beat the first afro guy and pick up the bubble armor thing the game just stops working. So I refreshed the page and ran into the same exact problem.
The music also needs better transitioning. Having the music just stop abruptly until you fulfill the next thing (picking up an item or even walking to the other side of the level).
In conclusion this was programmed terribly and could of been awesome if someone had just tested this out a few times before submitting it.
I rate it 2 tick tocks.