Discovered your first hidden Skull.
Answered all UNSC distress calls.
Completed the main campaign.
Got the Scorpion all the way to the "House" without it blowing up.
Fully upgraded the Grappleshot.
Eliminated all 15 Banished High-Value Targets.
Captured all available Forward Operating Bases.
Completed all seven Banished outposts.
Fully upgraded the Drop Wall ability.
Threw 50 fusion coils.
Stuck 50 enemies with grenades.
Took down all three Banished AA guns in under 20 minutes.
Fully upgraded the Threat Sensor ability.
Used the Grappleshot to board an enemy Ghost.
Unlocked the Thruster ability.
Deployed the Drop Wall 50 times.
Unlocked the Drop Wall ability.
Brought some rescued UNSC Marines along for the ride into a main mission.
Scanned a Forerunner Artifact.
Fully upgraded your Energy Shields.
Completed a Banished outpost.
Used the Threat Sensor 50 times.
Eliminated a Banished High-Value Target.
Took out a Banished Propaganda Tower.
Accessed your first Mjolnir Armor Locker.
Unlocked the Threat Sensor ability.
Answered a UNSC distress call.
Successfully used the Grappleshot 50 times.
Captured your first Forward Operating Base.
Located and secured a Spartan Core.
Accessed your first UNSC Audio Log.
Accessed your first Banished Audio Log.
Accessed your first Spartan Audio Log.
Killed an enemy with melee using a bladed weapon in a matchmade game.
Killed an enemy with the Ravager's charged shot in a matchmade game.
Destroyed an enemy vehicle with the Skewer in a matchmade game.
"Grapplejacked" an enemy flying vehicle in a matchmade game.
Picked up a weapon using the Grappleshot in a matchmade game.
Placed an item in the Razorback's storage in a matchmade game.
Repelled an enemy grenade with the Repulsor in a matchmade game.
Dropped a Power Weapon for an ally in a matchmade game.
Drove 4 unique vehicles in a game
Spectated an ally that is driving a Warthog or Razorback in a matchmade game.
Marked an enemy located at "Top Mid" in a matchmade game.
Marked 3+ enemies at once in a matchmade game.
Gained access to a loot cave in a matchmade game.
Killed three enemies with the ball in an Oddball game in a matchmade game.
Captured the flag twice in a Capture the Flag game in a matchmade game.
Secured 5 zones in a Strongholds game in a matchmade game.
Revived 3 allies in an Attrition/Elimination round in a matchmade or custom game.
Assisted in capturing all zones that lead to a score in a Total Control game.
Deposited 5 Power Seeds in a Stockpile game in a matchmade game.
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, captured all Forward Operating Bases on any difficulty.
In co-op, completed all seven Banished outposts on any difficulty.
In co-op, answered all UNSC distress calls on any difficulty.
In co-op, eliminated all Banished High-Value Targets on any difficulty.
In co-op, killed 100 enemies while all players are riding air vehicles.
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 the main campaign on Normal difficulty.
Completed all main campaign missions on Heroic difficulty.
Completed all main missions on Legendary with all Skulls active.
Fully upgraded the Thruster ability.
Completed all Valor-awarding activities.
Unlocked all UNSC Audio Logs.
Unlocked all Banished Audio Logs.
Unlocked all Spartan Audio Logs.
Acquired all Spartan Cores.
Accessed all 34 Mjolnir Armor Lockers.
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.
Checked out the best possible view.
Used the Thruster 50 times.
Splattered an enemy with a Ghost.
Got and equip a new AI.
Wore a new armor customization item.
Tried out a new weapon customization item.
Test drove a new vehicle customization.
Changed your Spartan Tag.
Changed your Spartan's look in the Customize menu.
Completed one level in a Battle Pass.
Completed a Battle Pass.
Completed a Daily Challenge.
Completed a Weekly Challenge.
Completed a Limited Time Challenge.
Played a Ranked Match.
Finished Ranked Placement Matches.
Viewed a clip in theater.
Played a custom game.
Launched into Training Mode for the first time.
Changed any training mode option.
Completed a Weapon Drill.
Earned 3 stars in a Weapon Drill.
Earned 3 stars in 5 Tier 3 Weapon Drills
Completed the Tutorial.
Accessed your Personal AI.
Grabbed a power weapon from the Tutorial armory.
Earned 2,000 score in a matchmade game.
Earned a Mythic Medal in a matchmade game.
Earned "Splatter" with a Brute Chopper in a matchmade game.
Earned "Perfect" with a VK78 Commando in a matchmade game.
Earned "Mount Up" in a Razorback in a matchmade game.
Earned "Chain Reaction" with a Shock Rifle in a matchmade game.
"Back Smacked" an enemy who was zoomed in with a scoped weapon in a matchmade game.
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