This game looks and sounds great! I really like the subtle sounds on the footsteps, landing after a jump, and mineral pickup. I also very much like that when you get close enough to a mineral it flies to the character making it nice and easy to collect. I liked the eruption as well, when it happened I spent a good amount of time looking back at it as I ran.
The one piece of feedback I have is that the mouse sensitivity on the camera *might* be too low for me. However I also played it on a laptop with a trackpad so maybe this isn't an issue for a normal mouse. I did notice that sometimes the camera stopped responding to mouse input, but I wasn't able to figure out how to replicate it 100%. It seemed to work for me when standing still but sometimes not when moving, but maybe that's a coincidence.
Great job!