Sniper Fi

Sniper Fi is a Special Ops level in Call of Duty: Modern Warfare 2. The objective is to hold off waves of enemies using all you have at your disposal. On Regular difficulty, the player will have to hold off three waves of infantry, one Jeep and one Truck for one star. On Hardened difficulty, the player will have to hold off four waves of infantry, two Jeeps and one Truck for two stars. On Veteran difficulty, the player will have to hold off five waves of infantry, three Jeeps and two Trucks for three stars.

Overview
The level takes place in a snowy open area, with little cover and a few buildings for vantage points. Start off by placing a Claymore mine at the ladder to your left, and another at the stairs to the right, and snipe all enemies you can see. Make use of the M240's Heartbeat Sensor and don't leave your starting position as it offers great cover, but be aware that enemies will occassionally throw grenades up at you if they get close. When Trucks and Jeeps arrive, use Predator Missiles or RPGs to take them out before the occupants can disembark from the vehicles. Keep a firm eye on your enemies, as the Predator Missile "wobbles" a lot when first launched. Ghost and Soap will tell you when you can use the missiles, so pay attention to what they say.

Strategy
When playing on Veteran, teamwork will be very important in this mission. Both players should keep their M82 sniper rifles and switch out their Desert Eagles for the RPG and the AK-47 with grenade launcher respectively - they can be found on the box to the left down the stairs (the right side of the building). One player should also pick up the ten claymores nearby (still on the ground level), placing claymores on the way back up. Be sure to place them at a distance from each other as they will explode together if put too close. Remember not to put them in the open as enemies will actively shoot at claymores if they see any. Place another on the top of the ladder on the left of the building. The player without the claymores should have the Predator Drone controls which appear after the first wave. The first wave should be easy enough using the sniper rifles. Try to stay behind cover as much as possible when sniping. If a player gets downed, the other player should go prone to revive him, so that they don't get shot while reviving.

On the second wave, the Predator missiles become available. The player without the claymores should pick the laptop up and use it immediately, targeting the jeep as it contains the most troops. Remember to use the Predator missile as soon as it becomes available - it is automatically recharged at the beginning of each wave. If the missile misses the vehicle somehow, the player can use RPGs to blow it up as fast as possible. Beware of the building to the left of the starting building; enemies will go on it, giving them a good vantage point. Make sure to have someone covering it. Between waves, replace used claymores and place if necessary.

Once the ammo of the grenade launcher and/or RPG is expended, the player can pick up the other RPG on top of the building and the remaining claymores that should be easily within reach. The other player can then pick up the M240 with Heartbeat Sensor and locate the enemies easily. Continue with this strategy until the end (wave 5), using explosives and Pretador missiles to thin out enemy numbers.

Trivia
thumb|300px|right
 * Ghost and Soap confirm that the player is controlling Gary Sanderson when they address him as Roach; Sanderson's callsign.
 * Ghost will inform the player how far they have progressed through each wave, while Soap will inform the player when the Predator missile is online.
 * The title could possibly be a reference to the first mission of the previous game, Semper Fi, but seeing as how Infinity Ward likes to distance itself from Treyarch, it is most likely a reference to the United States Marine Corps's motto "Semper Fi", which is Latin for "Always Faithful".
 * Trucks hold ten enemies: a driver, a passenger in the seat next to the driver, and eight additional passengers in the back. It is vital on the harder difficulties that the player destroy the truck before the enemies manage to disembark and become a serious threat.
 * Jeeps hold four enemies: one driver and three passengers. They can be destroyed quickly with concentrated fire from an M240.