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Come To Mama (15G/Bronze) “Liberate the Matriarch“ This achievement/trophy is easily obtained by completing the first Alien mission on any difficulty.
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Breaking Quarantine (15G/Bronze) “Escape from the Research Lab” This achievement/trophy is easily obtained by completing the second Alien mission on any difficulty.
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Grunt Hunt (15G/Bronze) “Wipe out all of the Marines in the Colony” Unlike the previous achievements/trophies this can’t be unlocked just by completing the level. You must make sure you kill every single Marine.
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Under Pressure (15G/Bronze) “Solve the riddle of the Ruins” Under Pressure is unlocked by activating the 3 pressure pads on Ruins. You have to do this to proceed with the level so you’ll unlock it if you complete the mission.
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Grim Reaper (15G/Bronze) “Harvest all available civilians in the Alien Campaign” This one can be tricky as there are 2 or 3 civilians in the campaign that will commit suicide if they see you coming. There are always alternative routes to get to them but you have to be careful. There are various guides online if you require the help.
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Alien vs Predator (30G/Silver) “Create a new species” This is unlocked once you have defeated the Wolf Predator and harvested him in the final section of the Ruins level.
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I Admire its Purity (15G/Bronze) “Complete Alien Campaign on Hard difficulty setting” This achievement/trophy is unlocked once you have completed all Alien missions on Hard. The missions can be completed out of order.
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Magnificent, Isn’t It? (30G/Silver) “Complete Alien Campaign on Nightmare difficulty setting” As with the previous achievement/trophy, this can be done out of order. The key to surviving on Nightmare is ensure you retreat after each engagement to recharge your health. Try and maintain your distance when it comes to the Predators as well.
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Club hopper (15G/Bronze) “Survive The ‘Party’ at The Club” This achievement/trophy is unlocked after you survive the battle at the colony club.
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Exit Strategy (15G/Bronze) “Escape from C-Block” This achievement/trophy is unlocked after you survive the section on Colony when all the fellow marines are wiped out.
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You Have My Sympathies (15G/Bronze) “Help Van Zandt” To unlock this you must kill Van Zandt before he is chest-bursted. You find him cacoooned in the Refinery. Simply shoot him.
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Regicide (15G/Bronze) “Defeat the Matriarch” This one is easily unlocked by defeating the Queen in the Refinery level.
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I Will Never Leave You… (15G/Bronze) “Locate Tequila” To obtain this achievement/trophy you just have to find Tequila in the Hive on the Ruins level.
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…That’s A Promise (15G/Bronze) “Get Tequila to surgery” Simply complete the Research Lab level and get Tequila to the cryo-tube to unlock this.
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One Big Bug (15G/Bronze) “Defeat the Praetorian” The Praetorian is found towards the end of the Research Lab level. To unlock this achievement/trophy simply kill it. Despite its size, its attacks can still be blocked. Just keep on the move and put as many bullets into it as possible.
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Get to The Chopper! (30G/Silver) “Recover Weyland’s datapad” This one is unlocked after you kill Weyland and pick-up Weyland’s datapad next to the Predator sarcophagus.
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Stay Frosty (15G/Bronze) “Complete Marine Campaign on Hard difficulty setting” To unlock this achievement/trophy complete the Marine campaign on Hard.
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I LOVE the Corps! (30G/Silver) “Complete Marine Campaign on Nightmare difficulty setting” This is known as the hardest achievement/trophy to unlock in AvP. It is vital you keep moving. Never allow yourself to get cornered and if you can, simply speed through the levels. If you need help, forum member Acid-Glow, has done a video guide.
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It Uses The Jungle (15G/Bronze) “Find a way through Gateway” This is easily unlocked once you open the gateway during the first Predator level.
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Fallen Comrade (15G/Bronze) “Find the Youngbloods in the Jungle” After you find and activate the self-destruct device on both dead Youngbloods during the Jungle mission this achievement/trophy will be unlocked.
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Matter of Honor (15G/Bronze) “Discover the Elite Predator’s fate” This is unlocked after you discover the corpse of the “Elite Predator” during the Refinery level.
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Eyes Of The Demon (15G/Bronze) “Retrieve the ancient mask” Once you find the “ancient mask” from the temple ruins you unlock”Eyes Of The Demon”.
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World of Hurt (15G/Bronze) “Survive trial by combat” To unlock this achievement/trophy you must defeat the Praetorian in the arena.
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Breaking and Entering (15G/Bronze) “Find a way into the Research Lab” This is easily unlocked once you gain access to the Research Lab in the level Research Lab.
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Reclaimer (15G/Bronze) “Retrieve the second artifact” This achievement/trophy is easily unlocked once you find and pickup the wrist gauntlet in the Research Lab level.
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Extinction Agenda (30G/Silver) “Destroy the Abomination” To unlock this last one you need to kill the Predalien. I found it easiest to lay mines down as you move around the arena. The Predalien follows you so it’ll run into most of the mines you lay.
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It Ain’t No Man (15G/Bronze) “Complete Predator Campaign on Hard difficulty setting” As with all the other campaigns you can complete this out of order as long as you finish all the missions on hard.
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One Ugly Mother (30G/Silver) “Complete Predator Campaign on Nightmare difficulty setting” I found the easiest way to complete the Predator campaign on Nightmare was to draw the Marines away from each other and try and make as many of the battles as I could 1-on-1. Once all missions are completed the achievement/trophy will be unlocked.
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Game Over, Man! (30G/Silver) “Complete all three Campaigns” The campaigns can be completed on any difficulty level to unlock this.
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Quite A Specimen (15G/Bronze) “Destroy all 50 Royal Jelly Containers” There are 10 containers on each level. If you are having trouble finding them, there are various guides online.
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Harsh Language (15G/Silver) “Discover all 67 Audio Diaries” If you are having trouble finding them, there are various guides online. You can access the diaries you have already collected via the main menu so you can discover which specific diaries you have missed.
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Fortune and Glory (15G/Bronze) “Find all 45 Predator trophy belts” The location of the belts are highlighted if you are nearby them when you enter focus mode. If you are having trouble finding them, there are various guides online.
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I Like To Keep This Handy (15G/Bronze) “Kill 2 enemies with one shot with the shotgun” The easiest way to unlock this was to go play through the Refinery mission until the battle with the Queen. Line up two face-huggers in your cross-hairs and let rip. This can be done on Easy.
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Let’s Rock! (15G/Bronze) “Kill 5 enemies with one burst from the smartgun” I found the easiest way to do this was to load up the Survivor mission C-Block. Grab the Smartgun, wait for several Aliens to make it over the barricades and just hold your finger down. It can be done in the campaign, however.
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Elite Sniper (15G/Bronze) “Kill 10 enemies with head shots from the scoped rifle” This achievement/trophy can be unlocked with kills in campaign, Survivor or multiplayer.
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Gunslinger (30G/Silver) “Kill 30 enemies with the pistol” This achievement/trophy can be unlocked with kills in campaign, Survivor or multiplayer.
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Spin Doctor (15G/Bronze) “Kill two enemies with one throw of the Battle Disc” This achievement/trophy can be unlocked with kills in campaign, Survivor or multiplayer.
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Stick Around (15G/Bronze) “Kill 20 enemies with the Combi Stick” This achievement/trophy can be unlocked with kills in campaign, Survivor or multiplayer.
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Scatter Shot (15G/Bronze) “As a team, kill 20 enemies in under 60 seconds in a Survivor match” It is ideal to get a full team of 4 players for this. It is easiest to unlock this achievement on the map C-Block, towards the start of the match when the bulkhead doors are still closed.
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Ain’t Got Time to Bleed (15G/Bronze) “Heal or regenerate 30 blocks of health in Survivor” This achievement/trophy can be completed over the course of several Survivor games.
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Welcome To The War (15G/Bronze) “Play and complete your first Ranked Match in standard Deathmatch mode” This achievement/trophy can only be unlocked in normal Deathmatch.
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Killer Instinct (15G/Bronze) “Win your first Ranked Match in standard Deathmatch mode” This achievement/trophy can only be unlocked in normal Deathmatch.
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Serial Killer (30G/Silver) “Win 10 Ranked Matches in any Deathmatch mode“
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Very Tough Hombre (15G/Bronze) “Kill 10 enemies in a row without dying in a Ranked Match” It is easiest to get this by playing as a marine and taking on Aliens & Predators that are already in battle, retreating and then repeating again. Be sure to heal between conflicts.
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Persecution Complex (15G/Bronze) “Achieve Persecutor status more than once in any Ranked Match“
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The Uninfected (30G/Silver) “Finish a Ranked Infestation match as the only remaining prey” To unlock this you need to end the Infestation match as still being a living marine. I found it easiest to unlock this map on larger levels in which you could retreat from the action once you were “last man standing”. Gateway, Ruins, Pyramid & Temple are good examples.
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The Six Pack (30G/Silver) “Play with six friends in a Ranked Match” It is vital to remember that for this you will need 6 friends as well as yourself so 7 players in total. You may need to be patient as the matchmaking system has been known to kick people out of the party once in the game lobby.
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Welcome to The Party (30G/Silver) “Get 6000 XP in Ranked Matches” This achievement/trophy is unlocked at Level 27.
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Real Nasty Habit (50G/Gold) “Get 18060 XP in Ranked Matches” This achievement/trophy is unlocked at Level 43, the final rank.
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Not Bad for A Human (50G/Platinum) “Get all the Aliens vs Predator achievements/trophies“
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