Honestly amazing.
Fantastic use of space and level design in general. The multiple paths you could take throughout the entire level, and the fact that they each complimented each other with the core mechanic in mind, such as providing shade/shelter from the elk, was very impressive.
The initial struggle, and then urge to get to the center, was something I found very engaging.
Additionally, the atmosphere in the game produced with the elk sound, the artwork, and animation, (not to mention the lighting effect!) just wow!
I would say that it isn't as obvious maybe it should be as to when being in the light could kill you, I found that I died several times when there was no sound playing - or perhaps I'm just too eager!
Overall great game! :D