He is either using, low gravity, exploits, or admin. Edit: the reason why I said this is cause he has lower gravity, and his low gravity is not as noticable but the gravity is not default.
At 0:29 , you didn't verify it. You actually need to take no damage, using a strategy. It does not instant kill you because it would be a pain to no-clip back.
no he ment 0:20 , and also there were 2 frames that he was in the same heifgt of the ground, then a very small second of the walking animation and he climbed@@creationisntgood942
the think that dropped my jaw is that he managed TO DO A 3X6 TRUSS WRAP AND A 4X3 STICKOUT, that type of jumps passes the nullifying-HELL barrier speaking in jht difficulties