I think more reseaerch was needed!
I found this movie quite entertaining and tense, but after looking in the goofs section and noticing:
Factual errors: Everything shown about belaying and climbing techniques, high altitude mountaineering, helicopter usage, high altitude medicine (exception: dex), high altitude mountaineering clothes and the shape of K2 is wrong.
Kinda makes me look down on this movie. They seem to have screwed everything up! HAHAHA!!!