I competed it literally yesterday. It took me 28 hours in total and I’d say I had a similar experience to you that I really enjoyed the concept but I wanted it to be finished quite a few hours before I actually completed it. Also, if you made it to the glacier area then you weren’t far from the end.
I confess I haven’t popped back in for a few updates now but it still was missing the slick/dynamic animal behaviour that even the very first trailers had, which I was most interested in.