I honestly don't understand how people keep missing the mark on him being one of the most durable and resilient "Jedis" ever. It's a freaking incredible feat that he's still capable of fighting.
He got shot with an explosive to the stomach. This is a critical injury. We've seen how destructive Chewies gun is. We were spoon fed at how powerful that gun was. There was enough force to completely destroy most if not all of his organs. He's probably using his force powers to just keep his organs functioning.
Every other jedi gets their arm or legs chopped off and they piss their pants and refuse to fight anymore. In fact, they get their arms chop off and just pass out from the pain. Look at Obi who got 2 scratches in the arm and leg and he's completely incapacitated.
And here we have kylo who had a grenade explode in his stomach and he's still chugging along.
Here's a thought experiment.
If you line up 100 people, one either side of the battlefield you have 50 people. One side of the battlefield tanks an explosive straight in the stomach, this explosive has enough force to destroy boulders and throw several stormtroopers back.
and on the other side you have people who just had their hands chopped off and or had the obi wan treatment and have a few scratches on their arms and legs.
Tell me which one side will win?
I'll give you a clue. The side that doesn't have critical injuries.
Kylo should not have been standing but he was.
He's way more of a tank than Anakin, Luke and Obi Wan who passed out from less.