(adsbygoogle = window.adsbygoogle || []).push({}); There are two windows you can still get up.1 behind the pig in the claymore room and 1 bottom left of stairs when you open first barrier outside the first elevator..

Get two people on each window...The scientists will run to 1 of these windows..
The other two jump off and go to the window where the scientists is...

He will be standing there looking at the other 2 on top of the window..

Then Kill him at your leisure ....You get trophy as well ...Not sure if you all get it or just the guy that kills him..Take turns at killing him if only 1 person gets it..

My bad if posted already...I did search it first.

+REP or thank ir i helped

For those just after the trophy, here is a fool proof tutorial -

1. Start a solo game.

2. Buy Quick Revive.

3. Earn enough points to get to the power switch, and back to the second floor.

4. IMPORTANT, be sure you are in the very back of the BIG elevator (one that leads to the 3rd floor) facing the teleporter when the scientist round begins.

5. As soon as the round starts, and the room gets all "bluish" the scientist should pop out of the teleporter. At this point cook a grenade and down yourself.

6. Blast the scientist with the Mustang and Sally you get when you go down.

7. Quick revive does it's job... enjoy the rest of your solo game, and your new trophy.

sweet cheers for that

He has a name you know.

yes its at the top of my quote to him