Pretty obvious he's walling. Some may be explained via sound and radar, but the ticks minj provided, it did it for me.

2k - looking up was fishy as hell, given the distance and aligned with enemy. but he does show consistency of looking at that spot around 18k.
4k - walking and making no sound, he looks up at the ground and points crosshair right at him.
Last two ticks what minj provided did it for me as well. Not so much the random shooting, but the shooting and them aiming at a crouched guy not making any sound, then dat prefire doeee.

Walls.
Perma banned, closed.