Because there are multiple enemy APCs on this level, if you are attempting to beat it with a small number of people, say three or less, it would be a good idea to have at least one of you spawn as a grenadier, although the 50 caliber sniper rifle can also take out the APCs rather easily. Make sure to capture the intel, blow up the AA gun on the hill, and blow up all train cars too to complete all objectives.

***For the record, as long as one person survives, all people in the co-op match will get the achievement if all objectives were completed***

This mission is a little more tricky as there are a bunch of guys hidden in the trees to the west. I prefer to go east to the area down by the water and clear that out and continue to the eastern AA location and then circle back the way you came to the western AA location. It's a little bit longer but much less frustrating. It's best to go with a sniper rifle or at least a scoped weapon as there is vary little close-quarters combat on this map.

The biggest thing to remember on this map is to blow the tanks to the west before trying to put the transmitter on the ship. One of the mission objectives is to not be detected near the ship, so have someone go below and plant the transmitter before shooting people the ship. That seems to be the key to completing this objective. Once you grab the other piece of intel in the north-east corner of the map, be careful as you head toward the extraction zone, as a armored vehicle will come from behind you headed toward the extraction point.

Caldera is pretty straight forward. Just clear the enemies as you go, and unless you have a large team, it's best to have everyone go up either the left or right together, and circle around. Remember to disable both the radar towers at the same time.

You will start off on the far end of the map, progress forward and conquer the first base. Then have one person hop on the turret near this base, and take out the person on the turret to take out all armor in the area and then clear the second base. Split up, one group to the left and one to the right and take out the next 2 bases. Continue to the next 3 bases. For the left base, you need to download some intel. For the right base, there will be a pile of missiles which you need to blow up with a charge. Now onto the center base. Blow up the missiles here and continue to the final base. Kill all they rebels in it and take all the hostages to the extraction point.

Easily the hardest mission. It's best to take it slow and use the drone to scout ahead. There is an APC at the front of the first set of buildings and 2 more at the actual headquarters below. Secondary objectives are to disable both comm link positions at the same time, and gather the intel at the headquarters. And of course, take out Alvardo is the primary objective.

Finish the all Co-Op missions completing all primary and secondary objectives without dying on default or hard difficulties.

Set up a game with 6 gamertags, preferably one of which is a spare for yourself or a friend. Put the 5 people that want the achievement on one team, and the spare tag on the other and have them blow themselves up 30 times. Can be completed in less than 10 minutes.

Be the winner 10 times in a solo match game type with at least 5 unique users in the room

There is really no easy way to do this. Most of the co-op game types are pretty lengthy, so it's best to just do the easiest co-op campaign missions over and over again.

Headquarters is the easiest map to achieve this on, although even then it's not easy. You MUST use default settings (i.e. no respawns, territory = base. The best method is to have your whole team use the M36 SAW with the single-shot burst to conserve ammo, and work in groups with one group relieving the other as they run out of ammo.

Click here for a detailed guide.

Best to use a .50 caliber rifle on a small map. Remember to turn respawns to infinite and enemy troops off. The Helo Hunt mode can be found within the COOP Elimination game type.

Must be done in Team Mission game type. Plant the demo charge at one of the 3-5 locations on the map. Best to go with 5 so that you can place up to 3 charges per round.

Is cumulative, can be achieved in Co-Op Campaign matches. Also works if the person was injured by friendly fire.

Despite what the achievement says, you DO NOT need 5 gamertags on your team, but just 5 gamertags in the room. Best to do with friends and take turns. Set up a game with no respawns to quicken things up.

See 'Team MVP' and repeat 10 times.

Kill 5 enemy players within 30 seconds in either solo or team game types. Must have 10 unique users in the room, all human. Easiest to get with some well place shots with a grenadier kit.

Get a total of 50 kills in Team or Solo matches with at least 5 gamertags in the room

Get a total of 150 kills in Team or Solo matches with at least 5 gamertags in the room

Get a total of 300 kills in Team or Solo matches with at least 5 gamertags in the room

Get a total of 500 kills in Team or Solo matches with at least 5 gamertags in the room

Get a total of 100 sniper rifle kills in Team or Solo matches with at least 5 gamertags in the room

Unlock all single player achievements including the tutorial achievements, each act on every difficulty level, and all quick mode achievements to unlock this achievement.

Easy. Just finish the tutorial. Check the individual challenges for how to complete each part with 'highest appreciation'.

In this first challenge you'll want to avoid getting shot at all to get the perfect rating. Easy enough, just stick to cover.

You'll need to headshot all five enemies in this challenge to receive a perfect rating. Easy enough. Just remember the last 2 are together so shoot one and get back in cover quick, and then take the other one out when it's clear.

To get a perfect rating on this challenge, you'll need to blow up the second APC using only ONE satchel charge. Stick to the right side of the road and make your way up to the metal fence. Throw a couple smokes in front of the APC and then get as close as you can and throw the satchel charge on it and blow it.

To get a perfect here, you'll need to let your team do all the killing. The first two enemies are in a group behind the first building on your left, and the last three are parallel to the gas station and to the right of it. Just point your team to cover, bring them up in recon mode, and once they have sights on the enemy go assault and you'll be done in no time.

Complete every secondary objective in either Campaign or Quick Mission Modes. Basically the secondary objectives are almost always to stop fleeing enemy vehicles.

Extended Secondary Objective Guide

Complete Act 1 of the Campaign on the easiest difficulty. Can be achieved beating Act 1 on a higher difficulty as well.

Complete Act 2 of the Campaign on the easiest difficulty. Can be achieved beating Act 1 on a higher difficulty as well.

Complete Act 3 of the Campaign on the easiest difficulty. Can be achieved beating Act 1 on a higher difficulty as well.

Complete Act 1 of the Campaign on the medium difficulty or higher.

Complete Act 2 of the Campaign on the medium difficulty or higher.

Complete Act 3 of the Campaign on the medium difficulty or higher.

Complete Act 1 of the Campaign on the highest difficulty level.

Complete Act 1 of the Campaign on the highest difficulty level.

Complete Act 1 of the Campaign on the highest difficulty level.

Complete any Quick Mission with an accuracy rating of 100%. Easiest way is to pick an easier mission (one of the earlier ones) and take a couple easy shots and then let your team do the rest of the work.

Basically the same idea as the Bull's Eye achievement. Let your team do all the work and stay back from the danger.

If you're good with your placement of your team, you can get this relatively easily at the same time as Iron Man & Bull's Eye. The first mission is the easiest to do it on. Since you can't have a teammate healed, I suggest not even bothering with a medic in that case, and get a third with more firepower.

Easiest to do on any of the helo missions. Pretty much runs on auto-pilot as long as you complete the mission.

Same as Hawk's Eye. Just pick a helo mission and tear those Mexican rebels a new one. Should be able to get both Predator & Hawk's Eye in one run easily.

There are quite a few opportunities to get this throughout the maps but the easiest way is to set up a custom Co-op Elimination match on a small map like Peninsula and set the enemy density to high. This particular map is quite tight with many rooftops for an advantage so you should have no problem finding groups of 3 enemies in an area, time your grenades properly and it will unlock.

This is pretty simple, simply run up to an enemy and drop a grenade, they are likely to shoot you down before it even explodes and kills them so run from behind or from a corner so they can't kill you before you chuck the grenade close enough to them. There must be at least 5 human players in the game.

The simple method here is to have someone from the enemy team approach and take your flag, then you kill that flag carrier and return it to your spawn and the achievement will unlock.

See "Caves(Co-op) Perfect" for details.

See "Caves(Co-op) Perfect" for details.

See "Caves(Co-op) Perfect" for details.

The is easiest done on the Plantation mission. It's better to do it with at least 3+ people which includes a Marksman and a Grenadier. The Grenadier can take care of the convoy vehicles and the Marksman should snipe most enemies from a distance, try to avoid close confrontation where possible because on hard difficulty you will not take much damage before dying. Don't forget to switch the Drone off in the mission settings beforehand, the level isn't too difficult providing you're patient and there are a couple of you.

See "Caves(Co-op) Perfect" for details.

These missions are not too difficult, some of them are even easily doable with just a few players where as some may require several for it to go smoothly (such as Swamp Airfield) so the more players you have the easier it will be. An important thing to remember is that if you die in the mission, you can still earn the achievement if the other players are still able to complete the mission, just make sure to stay in the game and spectate until it's finished. These missions take from 30-90 minutes depending on which map and how many players you have in your lobby. I will provide a few vital tips to what I think is worth keeping in mind in order to pass these missions without trouble.

• Don't rush..You have the Drone. Personally this is the most important resource you have in the game (maybe the only proper support) which brings me to the point that you must not underestimate the enemies as they will come out of anywhere in huge numbers and will instantly kill you if you're not aware of them, therefore always using the drone to identity enemies on the minimap will save your life countless times and make the whole mission much easier. Always move the drone ahead before you move so you're prepared and don't rush unless you have other players supporting you.

• Keep your friends close. Like mentioned before, the more players you have in the game the better. If you're are only playing with another person you may get outnumbered at times and the missions will become more difficulty than they have to be. Try to not go too far apart when playing in case someone goes down and no one is close enough to revive them as this has been the case many times through personal experience, these situations aren't necessary if everyone moves up each part of all the maps together at a steady pace.

• The right Loadout. Make sure you and your whole team spawn with the right equipment/guns. Having 4 Heavy Gunners on a sniper missions will not get you anywhere. Suppose you're in a team of 6 people, it would be most ideal to have 2 Snipers, 2 Attackers and 2 Marksmen so you're able to deal with any situation and enemy including the deadly tanks/APC's & choppers that you'll encounter several times!

• Remember Secondary objectives. These can include various tasks such as clearing out a camp full of enemies or taking out a Chopper. They are all required to be beaten on all the maps to unlock the achievement, so pay attention to the missions brief, in game map and objectives as you may often miss or forgot a certain objective. You can't progress through a mission before you completed the main objective anyway so don't forgot the others.

You can find partners for the missions in the Achievement Trading Thread.

See "Ghost Town (Co-op) Perfect" for details.

See "Ghost Town (Co-op) Perfect" for details.

See "Ghost Town (Co-op) Perfect" for details.

See "Ghost Town (Co-op) Perfect" for details.

I will rephrase the tips and info given in the previous Co-op pack because the exact same rules apply here, only difference is that these missions may prove a little more difficulty compared to the previous pack. E.g. the map Stronghold will not be easily possible to complete without at least 6 players, preferably 8+ as for the most part of the mission you will have to defend a building with multiple entrances against a huge horde of enemies.

These missions are not too difficult, some of them are even easily doable with just a few players where as some may require several for it to go smoothly (such as the Stronghold map as explained above) so the more players you have the easier it will be. An important thing to remember is that if you die in the mission, you can still earn the achievement if the other players are still able to complete the mission, just make sure to stay in the game and spectate until it's finished. These missions take from 30-90 minutes depending on which map and how many players you have in your lobby. I will provide a few vital tips to what I think is worth keeping in mind in order to pass these missions without trouble.

• Don't rush..You have the Drone. Personally this is the most important resource you have in the game (maybe the only proper support) which brings me to the point that you must not underestimate the enemies as they will come out of anywhere in huge numbers and will instantly kill you if you're not aware of them, therefore always using the drone to identity enemies on the minimap will save your life countless times and make the whole mission much easier. Always move the drone ahead before you move so you're prepared and don't rush unless you have other players supporting you.

• Keep your friends close. Like mentioned before, the more players you have in the game the better. If you're are only playing with another person you may get outnumbered at times and the missions will become more difficulty than they have to be. Try to not go too far apart when playing in case someone goes down and no one is close enough to revive them as this has been the case many times through personal experience, these situations aren't necessary if everyone moves up each part of all the maps together at a steady pace.

• The right Loadout. Make sure you and your whole team spawn with the right equipment/guns. Having 4 Heavy Gunners on a sniper missions will not get you anywhere. Suppose you're in a team of 6 people, it would be most ideal to have 2 Snipers, 2 Attackers and 2 Marksmen so you're able to deal with any situation and enemy including the deadly tanks/APC's & choppers that you'll encounter several times!

• Remember Secondary objectives. These can include various tasks such as clearing out a camp full of enemies or taking out a Chopper. They are all required to be beaten on all the maps to unlock the achievement, so pay attention to the missions brief, in game map and objectives as you may often miss or forgot a certain objective. You can't progress through a mission before you completed the main objective anyway so don't forget the others.

You can find partners for the missions in the Achievement Trading Thread.

Pretty simple, if you're doing the maps one by one with partners, then you can get this there. Just kill at least 3 enemies and then stay alive for 10 minutes without dying, you can kill more enemies in that time but it's better not to take the risk. Just hang back and let your friends up and do the work. I personally got this naturally playing the maps as I couldn't find any enemies to kill due to my team rushing through the map and me falling back.

You need to capture the enemy teams flag making you the flag carrier, then kill 3 enemy players from their team while you have possession of the flag. Depending how many players there are one each team, you may have to wait for them to respawn to get 3 kills, assuming you are boosting this. The achievement will unlock on your 3rd kill.

Make sure to pick a pistol with the most ammo in the Loadout screen. You will need to be fairly close to an enemy to cause any real damage and actually kill them with a pistol ass seeing as these maps are fairly big and open, it can be quite tough doing this so be careful you don't die or get carried away for the kills. The fewer players there are in your game the more chance you'll get trying to earn it.

Alternately, you can start a private map from the CC2 section and start the game by yourself and earn this. Although it says 5+ players, this one seems to unlock by yourself. I have unlocked it this way and it has been confirmed by many other players so if you're having trouble with your partners taking most of the kills while you helplessly try with a pistol, just do it solo. Make sure it's a map from this Pack though.