This looks good and has real potential; I'm looking forward to the full version, and I'll be following it! My number 1 concern with any kind of action-oriented game is how the basic movement feels, and you nailed it; it feels really good! The visuals are charming, and it seems like thsi will have a pretty big world to explore.
I do also have a little feedback. I know this is in a pretty early in development, but I did find a bug: the ladder climbing is a bit slow, so I'd jump to climb a bit faster, but every now and again, if I jumped off the top of the ladder, I'd freeze in the air in the climbing animation; there wasn't anything I could do but restart.