Played for a bit. Video:
The graphics are much, much better than what I remembered from last time. The game is still incredibly hard, both in controls and level design. Each time after dying I was kicked back to the tutorial and my collectables were whiped out. I believe this must be a bug. At first I thought I was picking a more difficult path since there was an arrow pointing in the opposite direction, but then that part of the cave was short and I had to go back. The right side of the cave could be expanded a lot.
Now this is something I cannot really put into words why, but the character movement feels awkward. This is both on the floor and in the air. I believe that playing with the acceleration, friction and speed values could improve how everything feels.
I stopped playing because it was not saving my progress and getting kicked back to the start is a bit too punishing. I have no way to win hardcore run.