You graphics is quite good :) and audio is interesting. I would recommend you to fix moving a bit. It was more satisfying to jump nonstop instead of sprinting - walking is not fluent. Sprinting should be faster. I like game loading --> you included text and picture there, I didn't see this effect at any other game including ours (also made in Unity). If I die, there is no mouse to click on replay. Its also easy to collide with terrain and fall under it. Your game is good, but too buggy.