This mission is only available after choosing Amita as the leader of the Golden Path and completing Culture Wars . Pagan is about to hit Utkarsh with artillery and you need to stop them before the town is wiped off the map. When you get there, you will have to hurry and clear the town of all enemies, as you will see a health bar for Utkarsh at the top of your screen.
There’s nothing too bad as far as enemies go, but there are two snipers in the town. One’s in a tower at the far end and the other is on a ledge to your left, which might be hard to hit unless you go near the first artillery cannon on your right. Speaking of which, kill the enemies around the cannon and you will have secured it, meaning it won’t fire anymore.
Actually, you will need to kill all of the enemies, so you’re going to be securing the cannons no matter what. After clearing out the place, go to the entrance and meet with the sappers, who will be disabling the guns (by destroying them, which we probably could’ve done ourselves). For the first one, you can use a mounted grenade launcher to kill the enemies, which includes some vehicles and even a helicopter.
Whenever you see a countdown show up is when the cannon will be blown up, so if you’re near it, move away. For the other two, you’ll need to get off the grenade launcher and go back on foot. Of course, there will be a few tough enemies thrown into the mix, like a helicopter and even a Heavy or two. As soon as the last cannon is destroyed, the mission will end.