Enjoyably difficult and plays on your depth perception in 3D which is such a cool idea. The jump speed is a bit slow for me as the longer it takes to restart from a failed attempt the more frustrating it is but it does add to the tension when climbing higher in the tower.

Very difficult though I'm sure that's what you were going for. 

I'd suggest maybe changing the camera angle slightly so its easier to tell where the platforms are moving, I found it a bit difficult to line up the platform that moves towards and away from the camera.

This is like "Getting Over It" but somehow even more frustrating.
Please take that as a compliment :D

Very difficult for a multitude of reasons, but each one could be by design so it's hard to criticise (gravity/camera/platform speed)

Good job, I like that the UI/Instructions is part of the 3D environment instead of a UI element

Pretty cool idea of a game and looks very stylish. Incredibly frustrating when you fall down to a lower level after working so hard to get up.

I did find though at times it was very hard to tell where the moving platforms were in relation to my cube making it hard to time jumps.

That being said really good fun and enjoyed struggling through.

The game difficulty is quite enjoyable, and makes finishing it a real challenge. 

The one criticism I could give is that the game feels like it runs very slowly, when things like the jumps feel super weightless. 

But, the game was fun to tear my hair out to beat.

A great start for a game, though the game itself is painfully difficult.

The only thing I could really say is to start replacing sprites with things that are more interesting, maybe add a jetpack to the back of the character which does nothing but look nice.