Obtain 6 000 points in the Suez mission in the Campaign
This is the shortest mission and may well be the easiest to unlock all assignments. As always, the usual tactics apply. You will start the mission with a rapid-fire grenade launcher, which really is not needed, but it can make for easy multi-kills if you feel you need them. The beginning boat deck area features several sets of enemies in close proximity to one another, allowing for some easy multi-kills. You can take out a helicopter towards the end of the first area for big points. There will be some scenes to watch and then you will have to deal with a small amount of enemies in the medical bay. If you need more points, which you may not, this will be your last opportunity to get them.

It will not be a problem if you were unable to reach 6,000 points during your first Suez play. You have to replay the mission two more times to help unlock several trophies. So if you failed the first time around, just use your judgment and figure out where you can improve. An extra multi-kill here and there can be enough to put you over the top. Be mindful to go for the Gold assignment (5,000 points) in all of your Suez plays, while making sure to obtain at least 6,000 points during one of those plays.

Please see Above and beyond the call for point-scoring tips.