I like this a lot!
Cute animations and spritework, not only considering the restrictions, but on it's own standards too.
You did a really good job of teaching a player the main mechanics thru gameplay, without slow tutorials. It's pretty fun and figuring all this stuff out was satisfying.
My only "complaint " is that I sometimes I wasn't sure where each arrow key would move me. But I think that's more a problem with myself.
Good job!