Wow this is hard!
Juggling the block and the movement with the lava.... ARRAGH!
Liked the art, sound was a little loud for me
Controls too a while to get used to and the blocks spawn very fast as soon as you get like 4-5 high, spend more time moving the blocks that I wanted to at the start.
Would have liked simultaneous controls with mouse or something (though it looks like you were going for controller support).
Great entry and great job for just 2 days!