Burn it Down (choosing Sabal) | Main Quests Far Cry 4 Guide

Don't make too much of a mess if you don't have to. At least at the beginning.

If you have decided to support Sabal in this conflict you will have to burn down the entire opium factory. Don't forget to bring with you the Molotov cocktails and maybe some flamethrower. Head to the place marked on your map and once you will pass the checkpoint you will enter an extensive yellow area. From now on you need to move carefully. Next to the first house you will meet an enemy who stands still. Use the opportunity and kill him quietly. Now you may head towards left where few steps after the small stairs, next to the tree, you may eliminate another opponent.

You may as well just throw the Molotov cocktails while making a flight above the plantation in a buzzer however you need to watch out for the accurate eye of the sniper.

Going forward you don't have to play around and kill your enemies quietly since even if the enemy will be hallowed there will be no incoming reinforcements. However there is a lot of enemies here and you may still decide to keep your actions undetected. The most important area on the plantation is the big building in the center. On its balcony you will find a wandering sniper whom you should eliminate as one of the firsts. Before you will start burning the fields down you should eliminate all of the enemies first whatever method you will choose. It will make the burning process a piece of a cake.

Shooting the explosive barrels down will burning the entire field.

You may set fire on the fields by throwing on them the Molotov cocktails or with a flamethrower. You may also find a lot of red explosive barrels which you may shoot down to initiate the explosion. Be sure that you have turned off or destroyed the generators which sprinkle the water over the area. You need to set fire to the four fields in total and the fastest way is by using the Molotov cocktails.

The last thing you need to do is to deal with the stacks of opium.

Now you should enter the building. On the two levels you will find a lot of opium. When you will set on fire all the nine stacks you will complete the mission. If you still haven't kill some enemies you don't have to bother with them anymore.