I have been thinking about the murder theory. There was mention made in one of the theories that the group was murdered because the government found information the hikers may have been planning to flee the country. What makes me think this is possible is the oldest member of the group, Semyon.
Perhaps there was a secret the guys were up to and fighting about, whether they should leave with Semyon as he had planned but did not mention it to anyone until after they started out. He may have had connections to people where they were going to end up that would help them cross the border into Finland. In short, he was in on the hike at the last minute and may have brought a trail of suspicion with him.
It is 1,776 miles to the Finnish border from Ortoten so they definitely would have had to have assistance from someone.
Perhaps things went terribly wrong because his secret was known and the government thought this would be an appropriate way to deal with the hikers before they met their contacts, not really knowing if all the hikers were planning on fleeing.
Yuri Yudin may not have been aware of it when he turned back, or maybe he turned back because he knew the plan would fail. This is all conjecture.
The diary of Lyudia expressed her depression and anxiety. The long and arduous trip with bad accommodations and food may have made Semyon want to share his secret plan with the male hikers.
They kept up the charade of the hike fearing someone might have found out about it even storing food, and they were being followed. Perhaps that was another reason they did not take the stove, the smoke would be easily detected by military.
If they were approached with lights and guns and peeked out to see that their plan was discovered, this would be a good reasonf for the small cuts in the wall of the tent and their leaving the tent.
With the injuries of the ravine hikers, I cannot imagine any way they could even perform digging of the dens with their deadly wounds of chest injuries, Lyuda's heart with massive hemorrhage of the right atria.
I would think these injuries would have had to been inflicted at their death site, since they would be basically in the lasts breaths of life.
Their murder would also explain the severe beating and torture as the government tried to find out who they were meeting in Ortoten and most of them did not know and were beaten so badly hoping they would give up names, which they probably didn't even know.
Perhaps the two Yuri's were left alone at the fire for a short time thinking they could warm up and ty would be able to talk their way out of it but their torturers knew they would not be able to get away so they continued the torture on the other hikers and returned to finish them off, or vice versa.
Dyatlov and the other two found appearing to be crawling toward the tent may have escaped much of the torture and tried to help their felllow hikers, even taking some clothing from the 2 Yuri's down to them to show the agents who were interrogating the ravine members they wanted to help and wanted no one to be harmed, thinking maybe they would not be and tried to convince the government people they were all innocent, which many may have been.
I don't agree with the theory of the kataballic wind in that no matter if there was this wind, it would still not be any reason for the injuries to the hikers.
I am throwing this out for review and thank you for any information to dispute this possibility... Jarrfan.