These trophies are part of a DLC pack and are not required for the Uncharted 2: Among Thieves platinum trophy.
NOTE: For the co-op trophies, I for one am willing to help out anyone who is still in need of the trophy. I'm sure all of your fellow Cruxis members are willing to help too.
Sneaky...
Get 50 stealth kills in deathmatch or elimination games
To get a stealth kill, sneak up behind an enemy and press square. A tip for being able to get behind the enemy is buying the Walk Softly booster (available at level 34 for $79,500) which allows you to walk on the map without making any sound. An alternative would be using one of the skeleton skins or buying the PlayStation Heroes DLC Pack- none of these skins have voices and therefore will make you even more quiet when trying to sneak up behind someone.
Brass Knuckles
Get 100 melee kills in deathmatch or elimination games
To hit an enemy with melee, walk up to them and press square. If they have taken no damage and have full health; it will take two punches to kill them. Melee kills also include kicking someone off of a ledge, pulling them off of the ledge, and smashing their head against a waist-high ledge. To make getting melee kills easier, you can get close to someone and start shooting, but finish them off by using melee. If you know an enemy is using the Invalid or Glass Jaw booster, use this to your advantage.
Tastes Like Chicken
Get 20 BBQ medals in deathmatch or elimination games
In order to obtain a BBQ medal, you must kill an enemy with a propane tank. There are a couple of ways to do it. Shoot a propane tank while an enemy is near it, or carry the propane tank over to an enemy, throw it over to them with L2 and shoot it. You don't need to aim when shooting it, just blindfire while the propane tank is in the air and you will automatically shoot it. The Treasure Bearer booster allows you to carry the propane tank at normal running speed, and is available at level 24 and costs $43,500.
Rapid Fire
Get seven tripled medals in deathmatch or elimination games
You obtain a tripled medal after killing three enemies in rapid succession. If you're aiming to do this, keep at least one grenade in your posession and wait until you see a group of enemies. If the grenade doesn't kill all of them, shoot the remaining enemies. A shotgun is also very effective. If you happen to be a good sniper, get in position and wait for a few enemies. Also, if you happen to notice yourself get a double down medal, look around quickly to see if there are any other enemies for you to kill.
I Told You I Was Hardcore!
Complete all three co-op maps on hard difficulty
These co-op maps include:
The Sanctuary
The Village
Nepal Warzone
This trophy is much easier with friends. A general warning is to stay close to your teammates, as if they fall or get grabbed by an enemy, you can help them quickly. If you're using Matchmaking, make sure you select your difficulty preference under your profile.
Made It
Finish wave ten in one survival game
This trophy is easy if you stay close to your teammates and have three people in total. A tip is to pick up the GAU and/or rocket launcher whenever possible. For armored enemies, don't bother throwing a grenade or using the rocket launcher, just continually shoot them in the head. For the GAU weilding enemy, use grenades and rocket launchers. If that doesn't finish him off, just continue to shoot him in the head.
Gold Digger
Finish wave ten in one gold rush game
This trophy is similar to the survival game trophy. Except this time, you need to deliver the treasure to a chest. One easy way of doing this is working as a team. Have one person grab the treasure and head for the chest right away. One or two people may cover the treasure holder, but usually one is necessary up until the higher rounds. The people not holding the treasure may also want to look for the treasure chest and guard it from enemies so it is easier for the player holding the treasure to place it into the chest.
Wipe Them Out...
Win fifty deathmatch games
Another very easy trophy that takes a bit of time. For it, you need to be on the winning team of a deathmatch. Try to go for a positive K/D ratio; it's really all you can do. After fifty wins the trophy is yours.
Plays Well With Others
Win fifty objective games
Objective games include Plunder, King of the Hill, Chain Reaction, etc. All you have to do is be on the winning team for any fifty objectives games.
Still Alive
Win fifty elimination games
Elimination is a game mode that is divided up into best of 5 rounds. You only have one life each round and the team scores a point when they eliminate everyone on the opposing team. Each round lasts 3 minutes. If both teams have at least one player alive after 3 minutes, no team gets a point. Win fifty games and this trophy will show up.
Plundered!
Get 200 plundered medals
A plunder medal is awarded to every member on the team when a player delivers the treasure.
Cold Blooded
Get 2,500 kills in deathmatch or elimination games
Only kills in deathmatch or elimination games count towards this trophy. It's also worth mentioning that only after you've bought the Drake's Fortune DLC pack that these kills start to count towards the trophy. If you're only headed towards this trophy and don't care about K/D ratio, run around the map killing every enemy you see.
NOTE: For the co-op trophies, I for one am willing to help out anyone who is still in need of the trophy. I'm sure all of your fellow Cruxis members are willing to help too.
Sneaky...
Get 50 stealth kills in deathmatch or elimination games
To get a stealth kill, sneak up behind an enemy and press square. A tip for being able to get behind the enemy is buying the Walk Softly booster (available at level 34 for $79,500) which allows you to walk on the map without making any sound. An alternative would be using one of the skeleton skins or buying the PlayStation Heroes DLC Pack- none of these skins have voices and therefore will make you even more quiet when trying to sneak up behind someone.
Brass Knuckles
Get 100 melee kills in deathmatch or elimination games
To hit an enemy with melee, walk up to them and press square. If they have taken no damage and have full health; it will take two punches to kill them. Melee kills also include kicking someone off of a ledge, pulling them off of the ledge, and smashing their head against a waist-high ledge. To make getting melee kills easier, you can get close to someone and start shooting, but finish them off by using melee. If you know an enemy is using the Invalid or Glass Jaw booster, use this to your advantage.
Tastes Like Chicken
Get 20 BBQ medals in deathmatch or elimination games
In order to obtain a BBQ medal, you must kill an enemy with a propane tank. There are a couple of ways to do it. Shoot a propane tank while an enemy is near it, or carry the propane tank over to an enemy, throw it over to them with L2 and shoot it. You don't need to aim when shooting it, just blindfire while the propane tank is in the air and you will automatically shoot it. The Treasure Bearer booster allows you to carry the propane tank at normal running speed, and is available at level 24 and costs $43,500.
Rapid Fire
Get seven tripled medals in deathmatch or elimination games
You obtain a tripled medal after killing three enemies in rapid succession. If you're aiming to do this, keep at least one grenade in your posession and wait until you see a group of enemies. If the grenade doesn't kill all of them, shoot the remaining enemies. A shotgun is also very effective. If you happen to be a good sniper, get in position and wait for a few enemies. Also, if you happen to notice yourself get a double down medal, look around quickly to see if there are any other enemies for you to kill.
I Told You I Was Hardcore!
Complete all three co-op maps on hard difficulty
These co-op maps include:
The Sanctuary
The Village
Nepal Warzone
This trophy is much easier with friends. A general warning is to stay close to your teammates, as if they fall or get grabbed by an enemy, you can help them quickly. If you're using Matchmaking, make sure you select your difficulty preference under your profile.
Made It
Finish wave ten in one survival game
This trophy is easy if you stay close to your teammates and have three people in total. A tip is to pick up the GAU and/or rocket launcher whenever possible. For armored enemies, don't bother throwing a grenade or using the rocket launcher, just continually shoot them in the head. For the GAU weilding enemy, use grenades and rocket launchers. If that doesn't finish him off, just continue to shoot him in the head.
Gold Digger
Finish wave ten in one gold rush game
This trophy is similar to the survival game trophy. Except this time, you need to deliver the treasure to a chest. One easy way of doing this is working as a team. Have one person grab the treasure and head for the chest right away. One or two people may cover the treasure holder, but usually one is necessary up until the higher rounds. The people not holding the treasure may also want to look for the treasure chest and guard it from enemies so it is easier for the player holding the treasure to place it into the chest.
Wipe Them Out...
Win fifty deathmatch games
Another very easy trophy that takes a bit of time. For it, you need to be on the winning team of a deathmatch. Try to go for a positive K/D ratio; it's really all you can do. After fifty wins the trophy is yours.
Plays Well With Others
Win fifty objective games
Objective games include Plunder, King of the Hill, Chain Reaction, etc. All you have to do is be on the winning team for any fifty objectives games.
Still Alive
Win fifty elimination games
Elimination is a game mode that is divided up into best of 5 rounds. You only have one life each round and the team scores a point when they eliminate everyone on the opposing team. Each round lasts 3 minutes. If both teams have at least one player alive after 3 minutes, no team gets a point. Win fifty games and this trophy will show up.
Plundered!
Get 200 plundered medals
A plunder medal is awarded to every member on the team when a player delivers the treasure.
Cold Blooded
Get 2,500 kills in deathmatch or elimination games
Only kills in deathmatch or elimination games count towards this trophy. It's also worth mentioning that only after you've bought the Drake's Fortune DLC pack that these kills start to count towards the trophy. If you're only headed towards this trophy and don't care about K/D ratio, run around the map killing every enemy you see.