Pretty nice game, I like the simple but occasionally challenging puzzles.
The usage of different forms took a while to get used to, it took some time to figure out how swimming works and what do I have to press for the wall climb. Maybe an extra line of explanation would have helped. Also the complete lack of sound is a thing that holds this game back a lot I think, it would add a lot to the experience and the game would feel more polished in my opinion.
Other than that it's a pretty well made game with a good amount of content the and has a nice and polished artstyle.