Defection Walkthrough - Call of Duty: Modern Warfare 4 Guide - IGN

Capping off the marines' time in enemy territory after Stranded is the next main mission of MW4's campaign , Defection. Here, Ko and the squad put their efforts from the previous mission to use to disable the North Korean airbase and escape with their lives.

When you take control of Park again in the truck, stand up and grab the HAN 86 assault rifle, some throwing knives, and the handgun on the seat if you’d like. But if you turn around, there’s a Astaroth .57 bolt-action sniper rifle with a thermal scope on the truck’s wall.

Leave the truck then follow park into the next room where you’ll take out two unaware enemies in tandem. Kal then kills the lights, and the next room has another pair of enemy soldiers to dispose of.

Plant Explosives on the Hypersonic Missiles

Go through the doors and plant explosive charges on the first vehicle target.

When you reach the second vehicle target, there are two more baddies on the right. Kal instructs you to plant charges first, then engage.

After doing so, continue further in until an enemy squad comes through the door - take them out, then turn left to plant charges on the third vehicle.

Head into the doors the enemy squad came out of and interact with the next set of double doors to trigger a cutscene with Ko and Ri.

You’re back in control of Park. Here you’ll engage with a lot of enemies, so be strategic about which weapons you use, and make sure you use cover and armor plates to stay alive. Kal and Moon are to your right ready to engage with you, as well as a nice collection of supplies; ammo, molotovs, bomb drones, and semtex.

When you’re ready, start blasting. Enemies come at you from all sides, but picking up the bomb drones and taking a group or two out from afar before they’re aware you’re there is recommended.

Find Jae on the map and hold Square to switch to his perspective to take on a sniper positon across from where Park and company are.

As Jae, look to your right to see a bunch of enemy soldiers shooting at Dunn and West at a rooftop from numerous anglers. Using your sniper, pick them off to ease the fire on your allies.

Trucks start approaching from the southeast, but they’re no match for the grenade launcher Jae has equipped. Turn around and blast the two trucks into oblivion before they can reach your allies.

Look for Dunn on the map back in the direction of the main action, and hold Square to swap to him.

As Dunn, you’ll need to take out the mortars firing on your position. There’s heavy enemy fire directly ahead of you, so take a quick second to shoot an RPG in that direction

Then turn your attention to the left where the enemy mortar team is firing from behind a truck. Take them out.

Truckloads of enemies start entering through the gate, so use Dunn’s RPG to make short work of them.

Swap back to Jae to use his grenade launcher to take out the three armored BMP tanks. Two blasts each should take care of them. Switch back to Dunn and take out the third with two RPG hits.

Swapping between Jae and Dunn, use their grenade launchers and RPG fire to take the helo out in a few hits. Make sure to switch often, as the helicopter will focus on whoever you’re controlling.

Fight your way across the airfield as a friendly helicopter arrives to provide you exfil. Make sure you actually take enemies out instead of just booking it straight to the extraction point, since they're still relentless at this point.

As the helicopter takes off, Park has a front row seat to seat setting off the explosives. Hold Square to send the enemies sky high, ending the mission.

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