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Enemy Revealed Defeat the Chaos sorcerer

Vital Asset Rescue Morias Leuze from the Chaos assault

Party Animal Win 10 multiplayer games while playing in Party Games playlists.

Target Acquired Ascertain the location of Morias Leuze

Unwavering Faith Play 10 Capture and Control matches in Eternal War mode
10/10

Dominator Play 10 Seize Ground matches in Eternal War mode
10/10

Tactical Genius Win a match in Eternal War mode with every Class
6/6

War Machine Play 10 Annihilation matches in Eternal War mode
10/10

Timeless Tomes Find all skulls and terminals in The Library.
100/100

Making a Necklace Collect 22 Skulls.
100/100

Glorious Victory Win any match in Eternal War mode

Merciless Achieve a streak of 5 kills without dying in Eternal War mode

Chaos All Along Discover the Chaos presence on Kadaku

This Stuff is Your History Complete 343 Guilty Spark.

Proto Gravemind Find all skulls and terminals in 343 Guilty Spark.
100/100

Stowed in Snow Find all skulls and terminals in Assault on the Control Room.
100/100

When the Revolution Comes In Buried, return to processing.

Ectoplasmic Residue In Buried, acquire a perk for free.

I'm Your Huckleberry In Buried, access all areas with the help of your new friend in one game.

Bee Thirty Complete Silent Cartographer.

Buried Treasure Find all skulls and terminals in Silent Cartographer.
100/100

Bad Gas Destroy 100 Grunt backpacks.
100/100

Plate Tectonics Break off 25 Hunter backplates.
100/100

Successful Search Find all skulls and terminals in Halo.
100/100

REMIX! Complete a Remixed Mission.

Beat the Drop Complete a Remixed Mission without dying.

Clean Sweep Find all skulls and terminals in Pillar of Autumn.
100/100

Unleash the Cannon Destroy the hive ship with the power of anti-aircraft batteries

The Die Is Cast Rise as a Primaris

Field of Battle Kill 100 enemies using environmental hazards
100/100

Welcome to the Penthouse Prestige once in multiplayer Public Match.

Captain’s Orders Complete Keyes.

Disarmed Dismember 100 Flood parts.
100/100

Double Trouble Complete Two Betrayals.

Protocol Dictates Action Complete The Library.

Control Alt Delete Complete Assault on the Control Room.

That’s My Ride On Assault on the Control Room get to the Banshee before the Elite.

Infiltration Anticipation Complete Truth and Reconciliation.

Installation 04 Complete Halo.

The Autumn Leaves Complete Pillar of Autumn.

Make Them Count Kill 100 enemies with headshots.
100/100

Cranial Collect a Skull.

Personal Space Complete Heavy Burden.

Claims Adjuster Break off 50 Vehicle parts.
100/100

Before the Fall Complete Boarding Action.

Undead Man's Party Bus In TranZit, complete all additions to the bus in 1 game.

Fuel Efficient In TranZit, use an alternative mode of transportation.

You Have No Power Over Me In TranZit, defeat "him" without being attacked by "him".

I Don't Think They Exist In TranZit, kill one of the denizens of the forest while it is latched onto you.

Brothers To The End Defeat General RAAM in co-op on Insane without either player being DBNO