Played for a bit. Some thoughts:
- I'm a 3D brainlet, but the way you clip through this light beam is odd. It's just a hollow cylinder? Probably better off using an actual volumetric light unless performance is a concern.
- This shadow is also odd. It moves as the camera moves, even if the player is standing still.
- The textures are all extremely shiny. You need some less specular materials for the rocks (especially compared to the crystals).
- Jump doesn't work sometimes when you're walking
- You should disable the system cursor. I was seeing both the Windows arrow and the in-game cursor
