The island is under control of terrorists and only you can stop them. Use several weapons and clean the place from the enemy.
The similar looking game before were mostly about controlling a team of soldiers, but now it’s only you and your sniping skills. More weapons can be used as you progress but it is for money.
The whole game you have to kill enemies and safe civilians so use some brain. If you throw a stone into a box the enemy will look the way or if it’s explosives then… you know what.