Complete each achievement to get the allotted gamerscore. If you have an Xbox 360 gamertag, you can log in using this same gamertag and the achievements will count the same as if you were playing the 360 version.

Achievement	How to unlock
A proper Waaagh! ( 20 points )	20 online ranked games completed with Orks.
Allies to the Cause ( 10 points )	Complete a mission in co-op mode.
Allies to the Chapter ( 25 points )	Complete 15 missions in co-op.
Angel of Death ( 20 points )	20 online ranked games played with Space Marines.
Aspect Warrior ( 20 points )	20 online ranked games completed with Eldar.
Astronomical! ( 30 points )	Recover the data from the Astronomic Array.
Battle Brothers ( 50 points )	Complete the Campaign in Co-op.
Crush the Enemy ( 40 points )	Complete Campaign on Primarch difficulty.
Death from Above ( 10 points )	Kill 20 enemies using Assault Jump.
Dug In ( 10 points )	Successfully defend 5 Strategic Assets.
Elite ( 10 points )	Max out a Combat Discipline on a squad. Earnable in Single Player and by the host in Co-Op.
Elite Strike Force ( 10 points )	Create a 3 Player Party and Play a Ranked Multiplayer Game together.
Emperor's Champion ( 10 points )	Kill a boss using only your Force Commander.
Even In Death I Still Serve ( 30 points )	Complete "Into the Hive."
Fast Attack ( 15 points )	Gain a second deployment in a single day.
Feel No Pain ( 10 points )	Earn a 5 star Resilience rating.
Fight to Survive ( 40 points )	Complete Campaign on Recruit difficulty.
Flawless victory ( 20 points )	Achieve an online ranked victory with 500 victory points remaining.
Fleet of Foot ( 10 points )	Earn a 5 star Speed rating.
Gladiator ( 25 points )	Play 10 Ranked Multiplayer Games.
Great Devourer ( 20 points )	20 online ranked games completed with Tyranid.
Hail the Champion ( 25 points )	Earn Champion rating 20 times during online ranked play.
Heavy Support ( 10 points )	Reach Level 20 with one of your Squads. Earnable in Single Player and by the host in Co-Op.
Hero of the Imperium ( 25 points )	Attain a Campaign Score of over 30,000 points. Earnable in Single Player and by the host in Co-Op.
Heroes of Angel Gate ( 30 points )	Complete "Secrets of Angel Forge."
Hold back the Xenos ( 40 points )	Complete Campaign on Sergeant difficulty.
In the name of the Emperor ( 20 points )	Own all Strategic Assets in a Campaign. Earnable only in Single Player and by the host in Co-Op.
Legend ( 25 points )	Attain a Campaign Score of over 90,000 points. Earnable in Single Player and by the host in Co-Op.
Lightning Assassin ( 10 points )	Kill a boss in less than one minute.
Massacre ( 10 points )	Complete 10 missions in a row without failing.
Master of the Apothecarion ( 30 points )	Revive your teammates 50 times during online ranked play.
Not one inch ( 10 points )	Defend a province without losing a single generator.
Purge the Xenos ( 10 points )	Earn a 5 star Fury rating.
Rant All You Will ( 30 points )	Complete "The True Enemy."
Red Ones Go Fastah! ( 5 points )	Create a Customized look for any race in the Army Painter.
Rush 'em ( 10 points )	Complete a mission under five minutes.
Sweeping Advance ( 10 points )	Kill an enemy who is retreating.
That's Close Enough ( 10 points )	Complete a mission with only ranged weapons.
The Avatar of Khaine ( 30 points )	Complete "The Wailing Doom."
The Book of Honor ( 10 points )	Get 15 stars on one mission.
The Cleansing Begins ( 30 points )	Complete "The Defense of Argus Gate."
The Warboss ( 30 points )	Complete "Raid Against the Warboss."
There Is Only War ( 25 points )	Terminate 500 Enemy Targets.
Tireless warrior ( 15 points )	Gain a third deployment in a single day.
Veteran Victor ( 30 points )	100 ranked wins.
Welcome to Calderis ( 15 points )	Complete "Stand With Your Brothers" and "Retake the Hamlet."
Win the War ( 40 points )	Complete Campaign on Captain difficulty.
Winning rush ( 20 points )	Earn a 5 game Win streak during online ranked play.
Wisdom of the Ancients ( 10 points )	View a recorded game.