Excellent audio, could listen to the music all day! It works amazingly with the visuals to create a mysterious atmosphere. I loved finding out what was lurking in the dark.
I'm on the fence about the jumping - on one hand it plays nicely with gravity and momentum, to give a nice sense of jumping on a low gravity planet. On the other, it can be a bit awkward at times, and make it hard for me to get where I want to go.
Overall, great game!