Really good idea. The way the world is designed adds a big strategic aspect: I realized you have to plan your route rather carefully, and use obstacles as helping stationary points / anchors!
Also, I agree with Zelveri, both on sound and art.
As a side note: I just wanted to point out that, judging from the description and your comments, there is a series of funny coincidences: we have the same kind of pseudonyms, we started making games at about the same time, we both participate as a challenge, we’re both openly critical and happy about our incomplete results in the description, we both decided not to let the player get into gratuitous trouble (you forbade impossible-jump situations, I forbade suicide in my two last games), we both designed levels in a rush at the end, and… we both cared about grass tiles (you added one such tile, I put three and a random proportion of these blades of grass to get displayed on the map). X)
I guess types of games may have types of creators. ;)
Anyway, that’s a noteworthy entry. As I think originality is paramount, I can only say this is a great proposition. Well done!