Over Reactor Call of Duty: MW3 Guide
Last update: 11 May 2016
After you open the hatchway you will have 5 minutes to switch off the reactor. Before you landed on the submarine press 4 to turn on night vision mode. Thanks to that you will see better enemies in the smoke. When you get on the deck crouch and eliminate foe on right side and then the second one on the left side.
Disarm charge on the hatchway, jump inside and move to the next room. Run on the center alley and shoot as many enemies as you can - one of them is a little on the right but the rest are standing in one line, so if you are lucky you will be able to eliminate all of them with one burst. If not hide and shoot them behind the cover. Then start walking and shooting at on the lower deck. You can easily aim them because they are using laser sights.
When you get rid of all enemies the doors on the right side will open. Kill the soldier who will pass through them, go to the next location and quickly shoot down foe standing in a distance in front of you.
Use the same tactic as before, move from one cover to the next one and eliminate encounter enemies. You can also use grenades and flash bangs.
When you eliminate all opponents the new group will run into the room through the middle passage on the higher deck. Kill them all.
Move to the next area where is branching with two passages. Throw flash bang and some grenades into one of them and then quickly move to the next one and eliminate all enemies. After that get to the second passage and kill all survivors.
When area is clear move to the next location with reactor. Get rid of all foes and after that start turning valve. Do it in crouch position because at the end of switching off some enemies will attack you from the right side. Kill them as fast as you can and move forward.
Start moving toward place marked by white point and eliminate all enemies en route.
Finally you will get outside. Find cover behind crates, use night vision mode (press 4) and start shooting at enemies landing on the submarine. When the path is clear move forward. After a while you will encounter another group of foes, kill them.
When you reach the marked point wait a second until chopper arrives.