Skellow

Run or Die Survive to the end of Countdown (Ace or harder)

Infinite Forever Get 100 Challenge Mode Infinite kills on every level (Rookie or harder)

Unbreakable Score 50,000 and survive to the end of all Challenge Mode Countdown levels (Rookie or harder)

Robocide Destroy 1000 operators

Fully Loaded Fully upgrade every weapon and missile in the Cronus mission

Demo Derby Smash 10 operators in one level

Bright Light! Bright Light! Destroy an operator using only Flares

Prime Helix Complete a mission on Heroic difficulty without a Space Marine being killed

Chapter Master Collect everything in the Codex

Emperor's Finest Collect all Space Marines

Omnissiah's Chosen Collect all non-Weapon Wargear

Master of Relics Collect all Weapons

Brothers of Macragge Collect all Ultramarines' Space Marines and Wargear

Brothers of Baal Collect all Blood Angels' Space Marines and Wargear

Brothers of Fenris Collect all Space Wolves' Space Marines and Wargear

Altar of Knowledge Collect all Miscellaneous Wargear

Lord of the Storm Collect all Shields

Sanctus Imperialis Collect all Purity Seals

Grenadier Collect all Grenades

Magos Gryphonne Collect all Lascannons

Master of Devastation Collect all Missile Launchers

Vanguardians Collect all Melee Weapons

Omnissiah's Cache Collect all Grav Guns

Breath of Baal Collect all Melta Weapons

Blessing of Vulkan Collect all Flame Weapons

Eternium Plasma Collect all Plasma Weapons

Sternguardian Collect all Bolt Weapons

Inquisitors' Favour Enter a mission with a squad of Space Marines who have all of their abilities unlocked, and Wargear in every Wargear slot

Imperial Laurel Level a Space Marine to Level 50

The Marksman's Honour Raise a Space Marine's Accuracy to 100%

Tyranid Hunter Raise a Space Marine's Crit to 50%

True Sons of the Emperor Kill 40,000 Tyranids

Burned to crisps Kill 50 Genestealers with the flamer

Psychic Exterminator Kill 50 Genestealers with Psychic Storm only

Cyclone Master Kill 50 Genestealers with the Cyclone missile launcher

Storm of Iron Kill 50 Genestealers with Assault Cannon

Electrocutioner Kill 50 Genestealers with Plasma fire

Master of Melta Kill 50 Genestealers with Melta fire

Destruction Minelayer Kill 50 Genestealers with the Proximity Mine

Sword of Retribution Kill 50 Genestealers with the Power Sword

Master Decapitater Kill 50 Genestealers with an Axe

Flesh Tearer Kill 50 Genestealers with Lighting Claws

Thunder Crusher Kill 50 Genestealers with Thunder Hammer

Automated Annihilation Kill 50 Genestealers with Tarantula Sentry Gun

Man of Destruction Kill 500 Genestealers

Master of Slaughter Kill 1000 Genestealers

Grant us the Strength to Prevail Win a Close Assault against Broodlord

Breacher Destroy 20 doors with a Chainfist

Melee Mayhem Complete a level using only Melee Weapons

Keep your distance Complete a level using only Range Weapons