Game looks really great and feels pretty good too. Has lots of initial "wow" factor. Here are a few thoughts.
1. Some of the level design could be changed for the better, like the jump where if you miss you have to start over at the beginning of the level. No one wants that. Another example: paths of collectibles down blind jumps right into enemies.
2. In-game guidance of controls would be greatly appreciated.
3. No saves and no apparent way to regen health made it very difficult to progress.
I agree with the others that this game looks fantastic (and feels pretty good too). Would love to play an update with some of the issues ironed out.