Continue playing to unlock this secret achievement.

Kill 100 enemies.

Kill 25 enemies with Ground Pound.

Continue playing to unlock this secret achievement.

Multi-kill -- 5 enemies with 1 Frag grenade.

Kill 25 Ork Nobs.

Continue playing to unlock this secret achievement.

Continue playing to unlock this secret achievement.

Continue playing to unlock this secret achievement.

Kill 500 enemies using Melee weapons.

Get 100 Headshots.

Multi-kill -- 2 enemies with 1 Stalker-Pattern bolter shot.

Kill 500 enemies using Ranged weapons.

Continue playing to unlock this secret achievement.

Continue playing to unlock this secret achievement.

Collect 10 Servo Skulls.

Kill 10 'Ard Boyz.

Kill 75 enemies using Executions.

Get 250 Headshots.

Continue playing to unlock this secret achievement.

Play each class in Multiplayer.

Continue playing to unlock this secret achievement.

Kill 2500 enemies.

Win 10 struggles against the Ork Nob.

Complete 5 weapon challenges.

Play 10 Multiplayer games as Space Marine and 10 Multiplayer games as Chaos Marine.

Complete 10 armor challenges.

Get a Multiplayer character to Lvl 10.

Get a Multiplayer character to Lvl 20.

Play 10 Multiplayer games using each class.

Complete the entire game on Hard difficulty.

Kill 250 enemies using Melee Fury attacks.

Get a Multiplayer character to Lvl 30.

Kill 250 enemies using Exotic weapons.

Complete a Chaos Invasion Arena without your team using any lives.

Achieve a team score of higher than 270,000 in the Chaos Invasion mission.

Collect all Servo Skulls.

Kill 25 opponents who are capturing your Control Point in Seize Ground.

Complete Chaos Invasion Arena 2.

Complete Chaos Invasion Arena 1.

Complete Chaos Invasion Arena 3.

Complete the Chaos Invasion mission.

Kill 10 enemies in a row in a single Ranged Fury activation.

Complete Part 1 of the game on Hard difficulty in a single session without dying or restarting.

Multi-kill -- Detonate a chain of 5 consecutive Vengeance Launcher rounds, killing 10 enemies.

Kill 150 enemies using the Charge attack.

Have 10 times more kills than deaths in a single game of Annihilation.

Fully customize a Space Marine and a Chaos Space Marine character.

Complete a Chapter of the single-player game using only Stalker-Pattern Bolter and Chainsword.

Complete a Chapter of the single-player campaign using only the Bolt Pistol and Chainsword.

Complete a Chapter of the single-player game using only the Vengeance Launcher and Power Axe.

Complete a Chapter of the single-player campaign using only Plasma weapons.

Get a Multiplayer character to Lvl 40.

Complete 3 challenges in one Chaos Invasion Arena.

Complete a public Co-op game in the Chaos Invasion mission.

Defeat the Chaos Invasion bonus wave.

Kill 50 Assault Marines/Raptors in mid-air.

Complete all the weapon challenges.

Kill 40,000 enemies in the game (all game modes combined).