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Protector of Pailune Freedom returned to Pailune after defeating the Black Bears and the Jackals.

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

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

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

Master Camper A safe haven now stands ready for you and your comrades.

Dust & Echoes Evolved Complete The Maw.

Greenhorn Complete the Campaign on Easy Difficulty.
100/100

Birth of a Spartan Complete the Campaign on Normal Difficulty.
100/100

Clean Lap On The Maw complete the warthog run without being forcibly ejected from your vehicle.

No Rush Find all skulls and terminals in The Maw.
100/100

Making a Necklace Collect 22 Skulls.
100/100

Plate Tectonics Break off 25 Hunter backplates.
100/100

Captain’s Orders Complete Keyes.

Double Trouble Complete Two Betrayals.

Outpost Discoveries Find all skulls and terminals in Two Betrayals.
100/100

Bad Gas Destroy 100 Grunt backpacks.
100/100

Protocol Dictates Action Complete The Library.

Disarmed Dismember 100 Flood parts.
100/100

This Stuff is Your History Complete 343 Guilty Spark.

Control Alt Delete Complete Assault on the Control Room.

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

Claims Adjuster Break off 50 Vehicle parts.
100/100

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

Bee Thirty Complete Silent Cartographer.

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

Infiltration Anticipation Complete Truth and Reconciliation.

Installation 04 Complete Halo.

Cranial Collect a Skull.

The Autumn Leaves Complete Pillar of Autumn.

Novice Adventurer Countless adventures await beyond the horizon.

Death from Above Stop Menendez once and for all.

Dead or Alive Jailor or executioner.

Late for the Prom Escort the president to the secure location in downtown LA.

Sinking Star Interrogate Menendez.

Deep Cover Capture Menendez.

Ultimate Sacrifice Only one can survive.

False Profit Capture Manuel Noriega and bring him to justice.

Dirty Business Listen and think before you shoot.

What Happens in Colossus... Find the Karma weapon.

Singapore Sling Successfully neutralize the SDC freighter at Keppel Terminal.

Waterlogged Gather information on Raul Menendez' suspected terrorist plot.

Driven by Rage Take down Menendez and his operation.

Defender Successfully defend FOB Spectre from incursion.

Shifting Sands Gather intel on Raul Menendez from Mullah Rahmaan.

Just Gettin' Started Complete 1 challenge in any level.

Gathering Storm Investigate the jungle facility.

No Man Left Behind Rescue Woods.

Gun Nut Complete a level with customized loadout.

Big Leagues Start the Campaign.

Stand Down Complete the campaign on any difficulty.