This is really pretty basic.
There are several flaws in the management; overall a good project.
But ... It may sound a little rude, but in this form it’s difficult to put the game "fun" rate: it is short and therefore does not bother; while there are no catchy solutions.
And maybe platformers is just not mine.
(And forgive my English, I use a Google Translate due to lack of knowledge of the language)