yeah, the middle group was a total pain for us. the others were a pain sometimes too. and occasionally, the shot before with 2 guys standing together it hit them both but the 2nd one would live and alert. and like i said, my brother and i were in the same house, just different rooms, and it was still a pain!
For the shot at 4:20 in the vid you posted (not the same one I used but I can't find mine) it helps a lot with that double headshot if the person taking that shot is down at river level. Makes it a piece of cake.
For the 3 groups of 3, the key is positioning: you need one guy in a great spot to take out the right group (so he will be deployed further to the right) and one guy in a great spot to get the middle group (usually deployed to the left). You want to do them in this order:
- Get the leftmost group as soon as they start coming down those high stairs (you should both have a clear view of them and it should be easy).
- Take the rightmost group (most of the responsibility here falls to the right hand guy since the left guy won't have a very good view).
- Hit that middle group (most of the responsibility here falls to the left hand guy since the right guy won't have a very good view).
The important thing is speed, since the right hand guy only has a very short window where he can see the middle group, so if you're slow in taking out that right group then the middle group will be a big problem. Once you've taken out that left group you both need to really quickly snap to the right group, take them down, and then quickly snap to the middle group and take them down. Once the sniper appears you can put your feet up.
EDIT: Here's the vid I used as a starting point, it shows the river level double headshot very clearly at 4:41 (rewind a bit to see the position):
http://www.youtube.com/watch?v=_Wf8WWiVDl8&hd=1
We did some things slightly differently from that vid:
4:03 - We took the two on the left (at the balcony) before the two on the right.
4:55 - I set up in the second spot he relocates to (over near the white van) right from the get go, rather than ever being at the top of the stairs there
5:35 - We did it exactly the same as in the video, I just wanted to point out how you can see that the left hand guy has most of the responsibility for that middle group
7:20 - We didn't take those two that early, we waited for them to move past that next obstruction so that they were standing below that fountain (there's a good chance for 'collateral' bullets if you wait until that moment too)
7:39 - We waited for those guys to stop by the railing
8:08 - These guys are a pain in the arse, my partner struggled to put his guy down (the one on the left) nearly every attempt and I generally had to take both or we failed
8:45 - Don't call for the breech until the guy walking to the right is basically just leaving view on the right (I think? Can't remember the exact point but I think that was it). That way he will be walking back in front of the other terrorists when the flashbangs get thrown and you can mow him down with the rest rather than trusting the NPC allies to take him out off screen (which sometimes works, sometimes doesn't). In this video the NPCs take him but in our experience that was a roll of the DICE that you really don't want to take if you've managed to take out the 3 x 3 group earlier (the biggest hurdle) successfully.
Waiting on you to get into BF3, duder.
Dude, did you not read what I posted about planning? Do you both know exactly which guy you're going to take at every single pairing? Without comms you need to plan that out in advance or you'll be back in here whinging about how broken these trophies are