Follow your allies as you charge down the hill. Head to the spot where you need to set up your mortar then press B.
Climb up the wall then continue down the creek after eliminating the targets. Clear your path through until you reach the stairs leading back to the street. Take cover and take out to eliminate the first MG nest.
Continue ahead and use the canal to flank the second MG nest. Dispatch the first wave of enemies on sight then run across towards the marked stairs. Hurl a grenade through the window where the MG nest is located to clear them out. Continue inside the apartment and follow the straightforward path. After breaching the second door, you'll be ambushed by three enemies. Kill them then continue to your objective. Get in the Humvee next.
After pulling over, head to the next objective and you'll be caught in a major ambush. Don't bother shooting them all from your current position; just regroup with your squad and follow them as they attempt to flank the enemies.
Continue upstairs to the overpass and clear out the enemies. Continue following your team and clear the road ahead. Continue moving up as you kill enemies before finally, a tank appears. Quickly run to the trenches to avoid getting blown to bits. Follow your team mates to the next building.
Follow your team mates again to the plaza and wait for the T-90 tank to get blown up. Once done, follow your team mate and run to the allied position across the street. You'll now need to pick up the Javelin nearby and destroy the tank yourself. There will be two more tanks that will appear so do the same thing and blow them up.
Next, move to the next objective point and wait for your new orders. Follow your team leader to get into flanking position. Push your way to the back of the bank, then stand under the emergency ladder to boost your ally.
Jump to the window and take out the enemy silently. Exit and continue mopping the enemies in the atrium. There's an ammo crate nearby as well in case you need to resupply.
Push through the enemy positions until you reach your other team mates. Continue clearing out the remaining enemies then regroup. Continue inside the vault and rappel down the elevator shaft.
Once you get the prompt, throw in the flashbang inside the room then go ahead and clear it.
Mission impossible it is...
Once done, head inside the vault and help lift the lid. Mission complete.