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.