I'd better post what I have now before this topic gets locked.
Just like there can be arguments that he is wall hacking, there can be arguments that he isn't wall hacking.
Here are some things to take into consideration:
9:55 He hears an enemy in rl while in yl and proceeds to camp the area in which he heard the enemy even though with a wall hack, he would have known that the guy had run away.
11:00 (one of the shots from the xfire video) He knows there's an enemy there, camps the corner and prefires to a jump.
14:22 (one of the shots from the xfire video) Reaction to spawn sound in dungeon, so of course he aims his crosshair towards the place where the enemy would most likely go.
15:37 (one of the shots from the xfire video) More of a reflex shot if anything; he sees an enemy, predicts where he will go next and shoots... too bad there's a wall in the way.
16:02 After the enemy appears in the crack, it takes him about half a second to shoot; if he had a wallhack I'd imagine he would have shot a lot sooner.
16:06 You can obviously hear a person in yl. Aim at where they most likely will be: the frozen body.
16:36 He's in dungeon camping and when it appears (without a wall hack) that the enemy has run away, he gives up EVEN THOUGH with a wall hack he would have seen that an enemy was still there.
17:40 What kind of failed wall hack is that? If he was indeed wall hacking, he would have easily been able to shoot the guy and get the point.
18:09 Aims at the melts instead of the enemy in quad. He obviously hears the enemy though, so it shows more that he's predicting where the enemy would be rather than actually knowing.
19:46 Hears an enemy, aims at the crack, almost gives up because he might have thought that the enemy had gone away, but then the enemy jumps and he reacts.
21:38 Hears the enemy, takes a peak, sees him and shoots on reflex.
Have any of you guys ever watched a demo of yourself with shownormals on? If you guys consider this hacking, then I'm never posting any of my demos again and praying to God I never get demoed.