It's Better than Nothing!
Finish as 3rd MVP in a ranked match
For this you’ll need to come in third place in any online public match. Try to rack up the kills, get points for captures and the like and be near the top of your team’s scoreboard.
Lock 'n' Load
Unlock all unique co-op weapons
There are eight weapons overall that can be unlocked- or bought- during the co-op missions. When you play through each mission, you will gain points and these points can then be put towards unlocking the weapons. To see which weapons you still need to unlock, you can go to “My Soldier” in the menu and then “Co-op Stats and Progression.” Here is a list of the weapons that you need to unlock for the achievement/trophy:
MP412 Rex - 63,000 pts
KH2002 - 126,000 pts
MP7 - 189,000 pts
M39 - 252,000 pts
93R - 315,000 pts
SG553 - 378,000 pts
G3A3 - 441,000 pts
Obtain your first enemy Dog Tag
In the multiplayer you will take the enemy’s dog tag when you perform a knife kill from behind. There will be many opportunities to get this while playing, so just wait for the right time and then strike.
Most Valuable Player
Finish as MVP in a ranked match
For this you’ll need to come in first place in any online public match. Try to rack up the kills, get points for captures and the like and be the best of the best of your team’s scoreboard.
Reach the VIP without setting off the alarm in Exfiltration
For this achievement, you and your partner need to time your attacks perfectly. There are almost always two enemies together and you will need to kill them both at the same time. You will also need to take out the CCTV cameras to avoid setting off the alarm. The only real tricky part is near the end where one player will have to shoot a guard and a camera with the same shot while the other player takes out the second guard.
Not on My Watch
Protect Chaffin from the soldiers in the street in Operation Swordbreaker
Near the very end of the mission “Operation Swordbreaker” you will need to cover Chaffin as the doc tries to help him off the road below. Use your scope to pop the enemies that appear on the street and the buildings on the left side until they say that they are clear and begin moving out. Once they have gotten off the street, there will be a few more enemies that come rushing. Take out one or two of them for safety sake and the achievement/trophy will pop as you start to make your way off the roof.
Complete the campaign story
Simply complete the single player campaign on any difficulty for this.
Platinum Trophy- PS3 Only
Collect all other Battlefield 3 Trophies
All PlayStation 3 owners know how this one goes. Collect every other trophy in the game and you will receive the coveted platinum.
Practice Makes Perfect
Headshot each of the targets in the gun range in Kaffarov
When you are traversing through the house during the mission “Karrarov” you will go through a dark hallway down some stairs where you fight a corridor of enemies with flashlights. Once they are dispatched, your two buddies will keep cover at a door and tell you to find another way around. Head down the stairs on the right side and you will go through a firing range. There are 15 targets throughout the range that need to be shot in the head. There is only one that moves and it is the last one. During your way through, some enemies will appear, so make sure not to accidently shoot the targets while taking down the enemies.
Reach the garage without going into man-down state in Hit and Run
Make sure that you and your partner both use patience and cover to avoid getting took down. There are a ton of enemies along the way to the garage and it will take some time to get there. There will be a spot just before the garage where one player will go high and the other low. Use spotting and have the player on the upper level clear out most of the enemies for the lower player. Once you hit the garage level B, this will pop.
Kick the car to kill the soldiers in Uprising
After you exit the building after acquiring a weapon, you will come to a small group of enemies and a car on the right side. Go past that car and ahead of you will be an ammo box and a path leading to the right that overlooks an area below. When you head to the right, there will be a car halfway over the cliff. Walk up to it and press the button prompt to give it a push onto the enemies below.
Complete the campaign story on Hard
As stated, for this achievement/trophy, you will need to play through the entire single player campaign on hard mode. Patience is the key to survival on hard mode. Use it well and use it often.
Destroy 6 enemy tanks before reaching the fort in Thunder Run
At the start of “Thunder Run” you will be trucking along in a tank when not long after the mission begins some enemy tanks will roll in from the right side. Simply use the tank controls to take out each of the 6 tanks and this achievement/trophy will pop.