This game is certainly a treat for the eyes (I got motionsickness at the start from the wavy effect, but it wore off after a minute, then I was fine), with a great dreamlike look and feel to everything. Those longjumps also feel dreamlike.
I feel the gameplay is held back by what seems like a significant RNG aspect to whether or not the platforms spawn in a reachable location and whether or not they are shrines (those orbs slow the descend of the platforms, correct?). And while the platforms slowly floating into position is again very dreamlike, it's hard to tell when they've finished moving and when you can actually make the jump.
Also, unless I completely suck, I think it's not possible to ascend out and it's just a matter of seeing how long you last. In which case some sort of high-score counter might have been nice. (If you want to be strict about the hardmode challenge, it could just have platform-icons instead of a time in numbers.)