Call of Duty: Modern Warfare 2/Estate Takedown

Single Player
Exit the cabin you start off in through the rear right door that leads down some stairs. Then, bust out your Barrett sniper rifle and take cover behind a stack of logs. Listen for machine gun fire and the gong sound, as that means the first juggernaut is coming from the right of the estate. If he comes, wait for him to come in sight and take him out with the Barrett. Also be sure to kill any visible enemies on the coastal hill in front of the stack of logs, but be weary of ghillie snipers atop the hill.

Next, kill the enemies to the left that charged from the estate towards some cover. Once the coast is clear, charge up the hill to the front entrance to the estate. Take out enemies to the left with your grenadier attachment if you have to. Otherwise, enter the building. Refill your Barrett ammo and choose the primary weapon you feel the most comfortable with (recommend an assault rifle or light machine gun). Ambush the mercenaries in the hallway basement and either go into the weapon cache room to get your weapon of choice or go straight to the basement exit and kill any enemies if they fire on you from the doorway. After that, retreat into the building, plant some claymores in front of the two entrances, and go upstairs. Kill the guy shooting at you from the corner in the other room, and then kill the enemy in the kitchen. Be sure to kill the guy waiting for you towards the left very quickly. Then run to the left and into the next cache room. Shoot the enemy in there and take cover behind the far left wall of the entrance to the computer room. Peak out and shoot up the guys in there. If they throw a flashbang, just fire to your right to ensure you at least wound the charging enemy until the effects wear off. After that, ensure the computer room is clear and go upstairs to take out any enemies that might be hiding up there. If the next juggernaut comes and tries to corner you while upstairs, throw a flashbang as he comes up the stairs and kill him with the Barrett. From there, juggernauts always appear randomly, so listen for the gong.

Then go into the office room and take cover behind the window. Peak up and kill some of the ghillie snipers in the driveway. Be cautious as the other guys will attempt to enter the estate from the side door and sneak up on you (it would be wise to plant a claymore). Once you have killed around half of the enemies in the level, go down to the basement and get the WA2000 Thermal to search for the ghille snipers hiding in the woods and down the driveway behind the solar panels. Without thermal, they are nearly impossible to see. When the random juggernauts come, run downhill towards the cabin you started in and lay down behind the steel crates to the front left of it. (you might get hit on your way, but you will be far enough away from the juggernaut's fire for it to be lethal). The juggernauts always come from the hill, so peak out and snipe them as they charge down it. Keep killing regular enemies and running to that location for juggernaut cover until you have eliminated all 40 enemies.