Just spent some time with your game and it's great you've taken a stab at making a moody puzzle-platformer like INSIDE. Those kinds of games are some of my favorite, and you've got a nice starting point here.
Like someone commented on your page, I think the key to making these games work is having a reliable controller. I found myself wrestling a bit with input lag for moving and jumping. Also, I'd love to see a new setting for your game, as this reminded almost too much of INSIDE. You have an interesting original mechanic (switching body types), so maybe there's another kind of setting/theme/story that plays directly into that mechanic. Just a suggestion, as I'd love to see more unique games likes this :)