Ambush :
7:53 - Following straighton :
I get hit twice by him, then I kill one guy, I see it's not him, I realise he can only go into the building then I start rushing.
He can't go to the open area with the bus on the right because I would've seen him going there (he wasn't that far away).
So I go to the right path. Why?
Because I know that the next room only has two exits. One of them goes to the spawn, and going the right way I have a better chance to get a good shooting angle. While going there, I see him going into the right corridor, and the rest is easy to figure out.
4:54 - Double helmet :
That's the way you aim when you have low sensitivity as I do.
You aim to your victim, then you correct, then you aim again.
At the speed it happened (relatively low) I can't see it weird to give a double headshot, although the first shot was more like gambling and the second one was fully intentional willing to shoot him down even if spamming.
4:42 - Mouse movement :
I don't see anything weird in here.
If you mean the headshot to JasonBourne, it's just killing someone.
As I stated above, taking aim, shooting, correcting.
The kill on the guy up that ledge is pretty much default, the only movement of the crosshair is because I'm getting hit.
2:40 - Shooting a guy I 'couldn't see' :
I saw the guy while jumping over the fence.
See that screenie :
0:30 - Killing the standing guy instead of the one shooting at me :
When checking both sides, I did a fast swipe to the left and found myself almost aiming one guy.
I just took advantage of that and finished him off.
Kingdom :
9:18 - Killing a guy on a corner :
There are two guys I kill that are on a 'corner'.
The first one is killed around 9:28 or so, I hear him running around the grass two or three times, I noted at least those timestamps for you to check with full volume :
9:38 - 9:36 - 9:33
There's only few patches of grass around there, I saw no one at the end corner of the wall, I trew a nade to check another corner and while turning I saw he wasn't on the far end corner, so there was only one place he could be, and I nailed it :]
About the guy I killed next, I heard gunfire and somenoe getting killed on my left, towards the bridge, so I went to check what happened. The moan and the kevlar drop sound just gave me all indications I needed to know where to aim.
Any other questions?
PS : Ninja edit, I just realised I am playing at 1920x1440. Although I had r_mode set for 1600x1200 :/