Nice 3D platforming game as your first one. The first level was very challenging, but I was able to get to the staircase and climb it. However the second level just seemed impossible, after the second jump especially. Regarding the graphics, I think the lava could’ve been better in terms of its color contrast (it was kind of painful to look at it XD). Also make sure to add a fullscreen button (there is a toggle in the itch.io edit page of your game). Nonetheless, congrats on making your first Unity game!