At the start of the mission, run past the horse and look in an alcove to the right for a body we can interact with that has an ‘access’ label on it. Do so for a sword. Go back and hop on the horse. Follow Woods and Zhao until you reach a meeting room for a short scene.
Afterwards, whilst facing the exit door, look to the right to see [ enemy intelligence (1/3) ] sitting on a shelf. Grab that and return outside, as you do interact with the ‘access’ door to the left for some mortars. Exit the cave and hop on your horse.
Follow your friends out the gate and look out for a red flag with an ammo crate in front and slightly to the right as you go. Hop off here and look at the base of the flag for [ enemy intelligence (2/3) ] . Continue after your buddies over to the first choke point. When you reach the ruins, hop off your horse and move up into cover. Work your way through the ruins and baddies to the back of the area where we’ll find a weapons stash on top of a building marked with an objective marker.
As you get up to the second level, look to the left for an ‘access’ chest containing some mines. Afterwards, go and loot the weapons stash for a stinger and destroy the BTRs in the area below. Keep the stinger with you as we’ll be using that quite a bit for the rest of this mission. Return to the archway we passed through on the way into the ruins and plant a charge, move to a safe distance and blow it up, blocking entry to the valley. Return to your horse.
As we head back to the main area, there will be a pair of enemy tanks and a number of helicopters about, we need to take them out using the stinger from horseback. Note that the stinger has a special aircraft lock on mode you can use to take out he helicopters easily.
Once the area is secure, follow Zhao and Woods to the next area. You will see a pair of wooden bridges suspended above the valley. Climb up the slope to the right of the lower bridge and look in the small cave further to the right for [ enemy intelligence (3/3) ] . Continue back along the dirt path here to reach the bridge. Use the rocks nearby as cover to eliminate the enemies on the opposite side of the bridge. If you still have the stinger, you can use it to take down the enemy helicopters in the area.
When it’s safe to do so, cross the bridge and work your way up the path to the right towards the covered area. As you arrive the objective will be complete and you’ll get a radio call to return to base. Backtrack to your horse, noting that a BTR will probably be chilling out next to it - so take it out with our stinger. Once it’s gone, hop on your horse and follow your crew back to camp for a scene.
During the scene, hit the on-screen button prompts to continue onwards to another scene. In the interrogation scene, mash the button indicated on the screen to prevent Mason from shooting the prisoner, or alternatively let him shoot by not pressing anything.