Single Player Campaign
Remember, this walkthrough is geared towards playing on veteran difficulty in the campaign to unlock all achievements in one playthrough. Since I have created videos for every mission, the text portion will not be in elaborate detail. If you are still having issues with a certain achievement, feel free to post up in the Walkthrough Forum.
'Back in the Fight' is unlocked by playing through the "Prologue". Just sit back and watch the cut sence.
The XM-25 is the grenade launcher that you start out with on 'Black Tuesday'. This one is easy to unlock since there are plenty of people to kill and you can refill your ammo once you get to the stock exchange building. There are 5 intel items in this mission(1-5). 'Too Big to Fail' is unlocked after you complete the mission 'Black Tuesday'.
Too Big to Fail
Destroy the Jamming Tower. Complete "Black Tuesday" on any difficulty.
'Wet Work' is unlocked by completing the mission 'Hunter Killer' where you are to capture the Russian command submarine. There are 2 intel items in 'Hunter Killer'(6-7). Once you take back New York, you unlock 'The Big Apple' achievement.
Take back New York Harbor. Complete "Hunter Killer" on any difficulty.
The Big Apple
Complete "Black Tuesday" and "Hunter Killer" on Veteran difficulty.
You can earn the 'Strike' achievement the easiest in 'Persona non grata' mission. At the beginning when you are on the balcony, you can cook a grenade just before the enemy breaks down the doors in the courtyard. If timed just right, the grenade will explode in a group of about 6 people just as they walk into the courtyard. "What Goes Up.." is unlocked when you are controlling the UGV later on in the mission. There are 6 helicopters that you need to destroy with the grenade launcher. I would recommend not shooting them at all with the UGV's minigun. It takes 2 grenades to bring down a chopper and you start with 23, so use them sparingly on the soldiers just in case you miss a few times. There are 4 intels in 'Persona non grata'(8-11). 'Carpe diem' is unlocked by completing the mission.
Kill 5 enemies with a single grenade in Single Player or Special Ops.
What Goes Up…
Destroy all the choppers with only the UGV's grenade launcher in "Persona Non Grata."
5 guides Carpe Diem
Escape the mountain safe house. Complete "Persona Non Grata" on any difficulty.
The 'Flight Attendant' achievement is earned during the part of the mission where you are being tossed around the plane cabin due to the turbulance and there will be 5 enemies to kill before you are able to walk again. I would recommend having two automatic weapons on hand for this part as it happens rather fast. There are 2 intel items on "Turbulence"(12-13). 'Frequent Flyer' is unlocked by completing the mission.
Kill all 5 enemies during the zero-g sequence in "Turbulence."
8 guides Frequent Flyer
Defend the Russian President. Complete "Turbulence" on any difficulty.
'For Whom the Shell Tolls' is unlocked in a later part of the mission during the mortar sequence. There will be 4 targets labeled that you must destroy using only 4 mortar shells. 3 of the targets are Trucks and the 4th is a group of soldiers. There are 3 intel items on "Back on the Grind"(14-16). 'Up to no Good' is unlocked by complete this mission. 'Out of the Frying Pan' is unlocked by completing the two previous missions; "Persona non grata", "Turbulence", and "Back on the Grind".
For Whom the Shell Tolls
Destroy all targets during the mortar sequence with only 4 shells in "Back on the Grid."
7 guides Up to No Good
Infiltrate the village. Complete "Back on the Grid" on any difficulty.
Out of the Frying Pan…
Complete "Persona Non Grata", "Turbulence", and "Back on the Grid" on Veteran difficulty.
There are 3 intel items on "Mind the Gap"(17-19). 'One Way Ticket' is unlocked by completing the mission.
One Way Ticket
Make it to Westminster. Complete "Mind the Gap" on any difficulty.
There are 3 intel items on this mission (20-22). After you find all 3, and if you have collected all of them up until this point, you will unlock the 'Informant' achievement for finding 22 intels. 'Welcome to WW3' is unlocked by completing the mission.
Welcome to WW3
Save the US Vice President. Complete "Goalpost" on any difficulty.
'Kill Box' is earned when you are in control of the drone helicopter. The best part of the mission to unlock this one is when you can use it for a second time when you get up to the broken ship that is close the first building. There are 3 intel items on "Return to Sender"(23-25). 'SandStorm!' is unlocked by completing this mission. 'Payback' is unlocked for completing the previous missions and "Return to Sender".
Kill 20 enemies with the Chopper Gunner in a single run in "Return to Sender."
9 guides Sandstorm!
Assault the shipping company. Complete "Return to Sender" on any difficulty.
Complete "Mind the Gap", "Goalpost", and "Return to Sender" on Veteran difficulty.
There are 4 intel items "Bag and Drag"(26-29).
Take down a chopper with an AC-130 smoke grenade in "Bag and Drag."
'Ménage à Trois' is unlocked during the AC-130 sequence. At this point in the mission, you are required to clear the area of enemy armor. You need to kill 3 tanks with one shot from the 105mm cannon. There will be a cluster of tanks shown in the video. It is best that you weaken the three tanks with the 40mm and 25mm cannons first and then deal the final blow with the 105mm. There are 2 intel items on "Iron Lady"(30-31). 'We'll Always Have Paris' is unlocked by completing "Iron Lady". 'City of Lights' is unlocked by completing the previous mission "Bag and Drag" as well as "Iron Lady".
Ménage à Trois
Destroy 3 tanks with a single 105mm shot in "Iron Lady."
5 guides City of Lights
Complete "Bag and Drag" and "Iron Lady" on Veteran difficulty.
There are 2 intel items on "Eye of the Storm"(32-33).
There is 1 intel item on "Blood Brother"(34).
Escape the city. Complete "Blood Brothers" on any difficulty.
There are 2 intel items on "Stronghold"(35-36). After you complete "Stronghold", you will unlock 'The Darkest Hour' for completing "Eye of the Storm", "Blood Brothers", and "Stronghold" missions.
Storm the Castle
Discover Makarov's next move. Complete "Stronghold" on any difficulty.
The Darkest Hour
Complete "Eye of the Storm", "Blood Brothers", and "Stronghold" on Veteran difficulty.
'Nein' is unlocked by killing 9 enemy soldiers with the A-10 Warhog airstrikes on "Scortched Earth". Killing the tanks do no count in the 9 kills. There are 5 intel items on "Scorched Earth"(37-41). 'Bad First Date' is unlocked by completing this mission.
Kill 9 enemies with A-10 strafing runs in "Scorched Earth."
4 guides Bad First Date
Find the girl. Complete "Scorched Earth" on any difficulty.
There are 2 intel items on "Down the Rabbit Hole"(42-43)
Diamond in the Rough
Rescue the Russian President. Complete "Down the Rabbit Hole" on any difficulty.
There are 3 intel items on "Dust to Dust"(44-46). 'Who Dares Wins', 'This is the End', and 'The Best of the Best' are unlocked by completing the single player campaign on veteran difficulty. If you were keeping up with your intels, you will have found the last 3 in "Dust to Dust".
This is the End
Complete "Scorched Earth", "Down the Rabbit Hole", and "Dust to Dust" on Veteran difficulty.
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