You certainly nailed the mood and went all-out on the gamefeel, but there's not a whole lot of substance to the game itself. I ended up looking at the attack meter for most of the time, since it didn't really matter what enemy I was up against; I'd always want a full attack.
I was pretty confused by the win/lose conditions, and the little pasture image in the upper corner. Sometimes it had more/fewer goats on it? And eventually there were too many lawn mowers to beat and no grass left, and then it ended.
It's pretty well-done for what it is, though.