Achievements
Alien vs Predator (30) - Create a new species.
Ain't Got Time to Bleed (15) - Heal or regenerate 30 blocks of health in Survivor.
Breaking and Entering (15) - Find a way into the Research Lab.
Breaking Quarantine (15) - Escape from the Research Lab.
Club hopper (15) - Survive The 'Party' at The Club.
Come to Mama (15) - Liberate the Matriarch.
Elite Sniper (15) - Kill 10 enemies with head shots from the scoped rifle.
Killer Instinct (15) - Win your first Ranked Match in standard Deathmatch mode.
Let's Rock! (15) - Kill 5 enemies with one burst from the smartgun.
Magnificent, Isn't It? (30) - Complete Alien Campaign on Nightmare difficulty setting.
Matter of Honor (15) - Discover the Elite Predator's fate.
Not Bad for A Human (50) - Get all the Aliens vs Predator achievements.
One Big Bug (15) - Defeat the Praetorian.
One Ugly Mother (30) - Complete Predator Campaign on Nightmare difficulty setting.
Persecution Complex (15) - Achieve Persecutor status more than once in any Ranked Match.
Quite A Specimen (15) - Destroy all 50 Royal Jelly Containers.
Real Nasty Habit (50) - Get 18,060 XP in Ranked Matches.
Reclaimer (15) - Retrieve the second artifact.
Regicide (15) - Defeat the Matriarch.
Scatter Shot (15) - As a team, kill 20 enemies in under 60 seconds in a Survivor match.
Exit Strategy (15) - Escape from C-Block.
Extinction Agenda (30) - Destroy the Abomination.
Eyes of The Demon (15) - Retrieve the ancient mask.
Fallen Comrade (15) - Find the Youngbloods in the Jungle.
Fortune and Glory (15) - Find all 45 Predator trophy belts.
Game Over, Man! (30) - Complete all three Campaigns.
Get to The Chopper! (30) - Recover Weyland's datapad.
Grim Reaper (15) - Harvest all available civilians in the Alien Campaign.
Grunt Hunt (15) - Wipe out all of the Marines in the Colony.
Gunslinger (30) - Kill 30 enemies with the pistol.
Harsh Language (15) - Discover all 67 Audio Diaries.
I Admire its Purity (15) - Complete Alien Campaign on Hard difficulty setting.
I Like to Keep This Handy (15) - Kill 2 enemies with one shot with the shotgun.
I LOVE the Corps! (30) - Complete Marine Campaign on Nightmare difficulty setting.
I Will Never Leave You... (15) - Locate Tequila.
It Ain't No Man (15) - Complete Predator Campaign on Hard difficulty setting.
It Uses The Jungle (15) - Find a way through Gateway.
Serial Killer (30) - Win 10 Ranked Matches in any Deathmatch mode.
Spin Doctor (15) - Kill two enemies with one throw of the Battle Disc.
Stay Frosty (15) - Complete Marine Campaign on Hard difficulty setting.
Stick Around (15) - Kill 20 enemies with the Combi Stick.
The Six Pack (30) - Play with six friends in a Ranked Match.
The Uninfected (30) - Finish a Ranked Infestation match as the only remaining prey.
Under Pressure (15) - Solve the riddle of the Ruins.
Very Tough Hombre (15) - Kill 10 enemies in a row without dying in a Ranked Match.
Welcome to The Party (30) - Get 6000 XP in Ranked Matches.
Welcome to The War (15) - Play and complete your first Ranked Match in standard Deathmatch mode.
World of Hurt (15) - Survive trial by combat.
You Have My Sympathies (15) - Help Van Zandt.
...That's A Promise (15) - Get Tequila to surgery.
Unlock Skins
Gibson (Marine) - Reach Rank 02.
Claw (Predator) - Reach Rank 03.
Connor (Marine) - Reach Rank 05.
Warrior Dome (Alien) - Reach Rank 04.
Stalker (Predator) - Reach Rank 07.
Ridged (Alien) - Reach Rank 10.
Moss (Marine) - Reach Rank 13.
Hunter (Predator) - Reach Rank 16.
Praetorian (Alien) - Reach Rank 19.
Johnson (Marine) - Reach Rank 22.
Wolf (Predator) - Reach Rank 25.
Rookie (Marine) - Reach Rank 28.
Spartan (Predator) - Reach Rank 31.
Nethead (Alien) - Reach Rank 34.