Revived 3 allies in an Attrition/Elimination round in a matchmade or custom game.
Defeated the Harbinger. Confronted the truth.
Completed the main campaign.
Completed the main campaign on Normal difficulty.
Completed all main campaign missions on Heroic difficulty.
At the end he was just a soldier. Hoping he'd done the right thing.
Unlocked all Banished Audio Logs.
Stormed the House of Reckoning.
Got the Scorpion all the way to the "House" without it blowing up.
A friend was in danger and time is running out. It's time to face your past and save your future.
Infiltrated the Command Spire and put an end to the Reformation.
Entered the Nexus and learned the secrets of the Spires. Trust is a fragile thing, isn't it?
Reached the Beacons, assembled the Sequence, and gained access to the Command Spire.
Fully upgraded the Drop Wall ability.
Acquired all Spartan Cores.
Accessed all 34 Mjolnir Armor Lockers.
In co-op, eliminated all Banished High-Value Targets on any difficulty.
Eliminated all 15 Banished High-Value Targets.
In co-op, killed 100 enemies while all players are riding air vehicles.
In co-op, answered all UNSC distress calls on any difficulty.
Answered all UNSC distress calls.
In co-op, captured all Forward Operating Bases on any difficulty.
Captured all available Forward Operating Bases.
Fully upgraded the Thruster ability.
In co-op, completed all seven Banished outposts on any difficulty.
Completed all seven Banished outposts.
Fully upgraded the Threat Sensor ability.
Took down the Spartan Killers Hyperius and Tovarus.
Took down all three Banished AA guns in under 20 minutes.
Destroyed a Banished anti-aircraft gun.
Shut down the first Spire and stopped Zeta's Reformation.
Defeated the Hunter pair stationed at the base of the Spire.
Fully upgraded your Energy Shields.
Checked out the best possible view.
Earned "Chain Reaction" with a Shock Rifle in a matchmade game.
Completed a Battle Pass.
Secured 5 zones in a Strongholds game in a matchmade game.
"Grapplejacked" an enemy flying vehicle in a matchmade game.
Unlocked the Thruster ability.
Unlocked the Drop Wall ability.
Shut down the Banished mining laser and gained access to the Conservatory.
Used the Grappleshot to board an enemy Ghost.
Fully upgraded the Grappleshot.
Brought some rescued UNSC Marines along for the ride into a main mission.
Completed a Banished outpost.
Eliminated a Banished High-Value Target.
Followed the UNSC signal to a Banished stronghold called the Tower. Found the source. Got out alive.
Unlocked the Threat Sensor ability.
Threw 50 fusion coils.
Splattered an enemy with a Ghost.
Took out a Banished Propaganda Tower.
Answered a UNSC distress call.
Captured your first Forward Operating Base.
Accessed your first Spartan Audio Log.
Scanned a Forerunner Artifact.
Accessed your first Mjolnir Armor Locker.
Fought your way through Outpost Tremonius and stepped out onto the surface of Zeta Halo.
Located and secured a Spartan Core.
Defeated the Banished warlord Tremonius
Accessed your first UNSC Audio Log.
Accessed your first Banished Audio Log.
Explored the underbelly of Zeta Halo and retrieved a weapon to turn the tide of this conflict.
Successfully used the Grappleshot 50 times.
Lost, and found.
Earned "Mount Up" in a Razorback in a matchmade game.
Discovered your first hidden Skull.
Spectated an ally that is driving a Warthog or Razorback in a matchmade game.
Repelled an enemy grenade with the Repulsor in a matchmade game.
Captured the flag twice in a Capture the Flag game in a matchmade game.
Killed an enemy with the Ravager's charged shot in a matchmade game.
Finished Ranked Placement Matches.
Marked an enemy located at "Top Mid" in a matchmade game.
"Back Smacked" an enemy who was zoomed in with a scoped weapon in a matchmade game.
Deposited 5 Power Seeds in a Stockpile game in a matchmade game.
Drove 4 unique vehicles in a game
Placed an item in the Razorback's storage in a matchmade game.
Earned "Splatter" with a Brute Chopper in a matchmade game.
Completed a Limited Time Challenge.
Dropped a Power Weapon for an ally in a matchmade game.
Picked up a weapon using the Grappleshot in a matchmade game.
Killed three enemies with the ball in an Oddball game in a matchmade game.
Grabbed a power weapon from the Tutorial armory.
Played a custom game.
Assisted in capturing all zones that lead to a score in a Total Control game.
Played a Ranked Match.
Changed any training mode option.
Launched into Training Mode for the first time.
Earned 3 stars in a Weapon Drill.
Completed a Weapon Drill.
Completed the Tutorial.
Accessed your Personal AI.
Viewed a clip in theater.
Marked 3+ enemies at once in a matchmade game.
Killed an enemy with melee using a bladed weapon in a matchmade game.
Destroyed an enemy vehicle with the Skewer in a matchmade game.
Completed one level in a Battle Pass.
Earned 2,000 score in a matchmade game.
Completed a Weekly Challenge.
Gained access to a loot cave in a matchmade game.
Completed a Daily Challenge.
Earned a Mythic Medal in a matchmade game.
Wore a new armor customization item.
Tried out a new weapon customization item.
Test drove a new vehicle customization.
Got and equip a new AI.
Changed your Spartan's look in the Customize menu.
Changed your Spartan Tag.
Completed all main campaign missions on Legendary difficulty.
Got at least one kill with every available weapon and grenade on the Banished ship.
Defeated Tremonius with the Skewer.
Destroyed both Phantoms before they left Outpost Tremonius.
Killed the Tower commander with a Plasma grenade.
Killed an enemy with the Banished mining laser.
Completed the Conservatory in less than 15 minutes.
Eliminated all enemies at the South Beacon with a Scorpion Tank.
In the Nexus, killed the Hunter pair with melee final blows.
Killed 40 enemies with the Stalker Rifle at the Command Spire.
Killed one Chieftain and used his turret to kill another in the Repository.
Defeated War Chief Escharum without ever fully losing your shields.
Breached the Auditorium in under three minutes.
In co-op, splattered 50 enemies while riding in a vehicle with another player.
In co-op, killed 50 enemies while riding a Mongoose with another player.
Killed 5 enemies with a Sniper Rifle from a vehicle. All players aboard vehicle share progress.
Killed 5 enemies with a Gravity Hammer from a vehicle. All players aboard vehicle share progress.
In co-op, killed a Hunter and its bond brother within three seconds of each other.
In co-op, destroyed all cooling towers at the Dig Site within 60 seconds of each other.
In co-op, destroyed four Fuel Silos within five seconds at either Ransom Keep or the Forge of Teash.
In co-op, lowered all three gates within 15 seconds of each other at Riven Gate.
Completed all main missions on Legendary with all Skulls active.
Completed all Valor-awarding activities.
Unlocked all UNSC Audio Logs.
Unlocked all Spartan Audio Logs.
Scanned all seven Forerunner Artifacts.
Discovered all hidden Skulls.
Destroyed 40 Banished Propaganda Towers.
Completed all 14 main missions in under eight hours.
Killed a Grunt that's been thrown by a Brute.
Deployed the Drop Wall 50 times.
Used the Threat Sensor 50 times.
Used the Thruster 50 times.
Stuck 50 enemies with grenades.
Earned 3 stars in 5 Tier 3 Weapon Drills
Completed the Movement Yard in under 25 seconds.
Earned "Perfect" with a VK78 Commando in a matchmade game.