Fun enough... but I would have liked it if I didn't have to wait to throw the next pumpkin. Its rather boring waiting for a pumpkin that is stuck on a platform!
Expand as in more levels, yes. You introduce a number of mechanics that only scratch the surface in terms of how they could be used and/or combined to make more and more challenging levels. Neat concept though.
To be honest I completely agree with you, this started of as a project for university. This is the first game I have made and wanted to get feedback on it. I intend to create more games so that I can build a more expansive resume, however I can also make more levels for this as a side project and will probably break them down into sections, so that one play through doesn't take an hour.
Thanks for your import! I will definitely take your advice on board and improve on my second game. :)