it was okay, but lacked simple basics...
a level restart button (reloaded the game as many times as there are levels,because of bugs and/or assumed bugs), a mute option, ... you don't need saves with such a short game
what annoyed me the most was that clipping bug when you don't stand correctly on the ground.
the second most was the jumpng not working correctly in the gravity level when you touched the crates or smth...
the part what took me the most time wise was... getting up to the windmill... how areyou supposed to know you can stand on that? I jumped around on everything else... you can't stand on the left structure once you fell down (but can before) but...
yeah it's really counterintuitive imho
the part that took the second most time was finding anything to drop the iceberg on...
the iceberg was the first element I noticed could be interacted with but... finding the correct empty space to put it... was difficult
I think the game could be even better if there were complexer levels, as in more then 2 interactions per level to solve it