My main criticism is I simply wanted more of it!
I'm a big fan of these kinds of puzzle games and the concept here is very elegant, falling into that great space where the concept is simple to grasp but potentially hard to master with the right puzzle designs. The platforms that get destroyed is a great mechanic that gets the brain working, and the sliding tiles reminded me of those old pokemon mazes which I also always loved trying to navigate.
I think some kind of mechanic to prevent the player shifting backwards and forwards to waste movement points could go down well, so you can only solve the problem the intended way.
Great concept though, love it!