You are going to be breaching two rooms full of hostages and enemies on an oil rig. The aim is obviously to rescue your men and shoot all the bad guys. You’ll remember a level like this from the single player campaign - The Only Easy Day...Was Yesterday. The first room is easy enough and you get the usual slow motion moment when you first breach the door. If you’re playing co-op obviously make sure you sync your attack. You can afford to fire from the hip if you just look for the crosshairs going red so you know an enemy is in sight but it is better to aim.

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After the first room some guys will attack as the gate opens, so be ready. Throwing a grenade over the top as it opens can be a good idea. The next batch are waiting for you at the top of the stairs so proceed with caution. There are quite a few guys in this section and a pesky helicopter off to your left. If you are going to try and shoot the chopper, wait until it fires and then aim carefully and let it fly. You can also just ignore it and run through and then duck into the room on the right. You’ll need to take out more guys inside but then you can flank the guys out on the deck.
There are more waiting for you around the next corner. If you are playing co-op, then one of you should take the stairs and the other can sweep around the bottom. Try to grab the thermal sighted gun for the next section. You should each take a side as you approach the final room to be breached. The map ahead will fill with smoke so use your thermal sight and grenades. The final room will have eight bad guys and a bunch of hostages and the easiest thing to do is just learn their positions, divide them between you and shoot them in sequence.