Complete the main campaign.
Complete the main campaign on Normal difficulty.
Complete all main campaign missions on Heroic difficulty.
Complete all main missions on Legendary with all Skulls active.
Unlock the Thruster ability.
Unlock the Drop Wall ability.
Unlock the Threat Sensor ability.
Fully upgrade the Thruster ability.
Fully upgrade the Drop Wall ability.
Fully upgrade the Threat Sensor ability.
Complete a Banished outpost.
Complete all seven Banished outposts.
Capture your first Forward Operating Base.
Capture all available Forward Operating Bases.
Unlock all Banished Audio Logs.
Access your first Spartan Audio Log.
Unlock all Spartan Audio Logs.
Locate and secure a Spartan Core.
Acquire all Spartan Cores.
Fully upgrade your Energy Shields.
Fully upgrade the Grappleshot.
Access your first Mjolnir Armor Locker.
Access all 34 Mjolnir Armor Lockers.
Scan a Forerunner Artifact.
Complete all Valor-awarding activities.
Scan all seven Forerunner Artifacts.
Discover your first hidden Skull.
Discover all hidden Skulls.
Take out a Banished Propaganda Tower.
Destroy 40 Banished Propaganda Towers.
Take down all three Banished AA guns.
Complete all 14 main missions in under eight hours.
Kill a Grunt that's been thrown by a Brute.
Check out the best possible view.
Successfully use the Grappleshot 50 times.
Answer a UNSC distress call.
Deploy the Drop Wall 50 times.
Use the Threat Sensor 50 times.
Answer all UNSC distress calls.
Eliminate a Banished High-Value Target.
Eliminate all 15 Banished High-Value Targets.
Access your first UNSC Audio Log.
Unlock all UNSC Audio Logs.
Access your first Banished Audio Log.
Use the Thruster 50 times.
Use the Grappleshot to board an enemy Ghost.
Get and equip a new AI.
Wear a new armor customization item.
Try out a new weapon customization item.
Test drive a new vehicle customization.
Change your Spartan Tag.
Change your Spartan's look in the Customize menu.
Throw 50 fusion coils.
Complete one level in a Battle Pass.
Complete a Battle Pass.
Complete a Daily Challenge.
Complete a Weekly Challenge.
Complete a Limited Time Challenge.
Play a Ranked Match.
Finished Ranked Placement Matches.
View a clip in theater.
Play a custom game.
Launch into Training Mode for the first time.
Get the Scorpion all the way to the "House" without it blowing up.
Change any training mode option.
Complete a Weapon Drill.
Splatter an enemy with a Ghost.
Bring some rescued UNSC Marines along for the ride into a main mission.
Stick 50 enemies with grenades.
Complete all main campaign missions on Legendary difficulty.
Earn 3 stars in a Weapon Drill.
Earn 3 stars in 5 Tier 3 Weapon Drills.
Earn "Mount Up" in a Razorback in a matchmade game.
Earn "Chain Reaction" with a Shock Rifle in a matchmade game.
"Back Smack" an enemy who is zoomed in with a scoped weapon in a matchmade game.
Kill an enemy with melee using a bladed weapon in a matchmade game.
Kill an enemy with the Ravager's charged shot in a matchmade game.
Destroy an enemy vehicle with the Skewer in a matchmade game.
"Grapplejack" an enemy flying vehicle in a matchmade game.
Pick up a weapon using the Grappleshot in a matchmade game.
Place an item in the Razorback's storage in a matchmade game.
Repel an enemy grenade with the Repulsor in a matchmade game.
Complete the Tutorial.
Drop a Power Weapon for an ally in a matchmade game.
Drive 4 unique vehicles in a matchmade game.
Spectate an ally that is driving a Warthog or Razorback in a matchmade game.
Mark an enemy located at "Top Mid" in a matchmade game.
Mark 3+ enemies at once in a matchmade game.
Gain access to a loot cave in a matchmade game.
Kill three enemies with the ball in a matchmade Oddball game.
Capture the flag twice in a matchmade Capture the Flag game.
Secure 5 zones in a matchmade Strongholds game.
Revive 3 allies in an Attrition/Elimination round in a matchmade or custom game.
Access your Personal AI.
Assist in capturing all zones that lead to a score in a matchmade Total Control game.
Deposit 5 Power Seeds in a matchmade Stockpile game.
Grab a power weapon from the Tutorial armory.
Earn 2,000 score in a matchmade game.
Earn a Mythic Medal in a matchmade game.
Earn "Splatter" with a Brute Chopper in a matchmade game.
Earn "Perfect" with a VK78 Commando in a matchmade game.
Get at least one kill with every available weapon and grenade on the Banished ship.
Defeat Tremonius with the Skewer.
Destroy both Phantoms before they leave Outpost Tremonius.
Kill the Tower commander with a Plasma grenade.
Kill an enemy with the Banished mining laser.
Complete the Conservatory in less than 15 minutes.
Eliminate all enemies at the South Beacon with a Scorpion Tank.
In the Nexus, kill the Hunter pair with melee final blows.
In co-op, kill 100 enemies while all players are riding air vehicles.
In co-op, splatter 50 enemies while riding in a vehicle with another player.
In co-op, kill 50 enemies while riding a Mongoose with another player.
Kill 5 enemies with a Sniper Rifle from a vehicle. All players aboard vehicle share progress.
Kill 5 enemies with a Gravity Hammer from a vehicle. All players aboard vehicle share progress.
In co-op, kill a Hunter and its bond brother within three seconds of each other.
In co-op, destroy all cooling towers at the Dig Site within 60 seconds of each other.
In co-op, destroy four Fuel Silos within five seconds at either Ransom Keep or the Forge of Teash.
In co-op, lower all three gates within 15 seconds of each other at Riven Gate.
Kill 40 enemies with the Stalker Rifle at the Command Spire.
Kill one Chieftain and use his turret to kill another in the Repository.
Defeat War Chief Escharum without ever fully losing your shields.
Breach the Auditorium in under three minutes.
In co-op, capture all Forward Operating Bases on any difficulty.
In co-op, complete all seven Banished outposts on any difficulty.
In co-op, answer all UNSC distress calls on any difficulty.
In co-op, eliminate all Banished High-Value Targets on any difficulty.
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