i really enjoy this kind of games and this one is no exception.
one small thought i have is that maybe, for the way the sprites are drawn, the grid is not immediately "readable" with the character being off center and all, but I guess that's in the style of old roguelikes so that's fine, just takes a bit of getting used to it.
also like other comments, I wasn't expecting to be able to grow twice, because i thought the game teached me that you can only do it once, so I was a bit stuck on the last level for a while. I guess it should be made clearer that it's only the space around you that stops you from doing so.
aside from that the game is really good, nice work!