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Secret Achievements (Show)
Halo: Reach Achievements
A Monument to All Your Sins
Completed every mission in Halo: Reach alone, on Legendary.
Gods Must Be Strong
Completed the Campaign on Legendary difficulty.
Make it Drizzle
Purchased an item from the Armory.
Used a Health Pack to replenish life after taking body damage.
I See You Favor a .45
Killed 10 enemies in a Firefight or Campaign session with the M6G pistol.
They've Always Been Faster
Cleared the 2nd mission without setting foot in a drivable vehicle.
KEEP IT CLEAN
Killed 7 Moa during the 2nd mission of the Campaign.
An Elegant Weapon...
Killed 10 enemies in a Firefight or Campaign session with the DMR.
We're Just Getting Started
Completed the 2nd mission on Normal or harder.
Two Corpses in One Grave
Killed 2 vehicles at once with the Target Locator during the 3rd mission.
Traded weapons with an AI ally in Campaign.
A Spoonful of Blamite
Killed 10 enemies in Firefight or Campaign with a supercombine explosion.
Protocol Dictates Action
Completed the 3rd mission on Normal or harder.
That's a Knife
Performed an Assassination on an enemy.
I Need a Weapon
Completed the 4th mission on Normal or harder.
Your Heresy Will Stay Your Feet
Killed the Elite Zealot before he escaped during the 5th mission.
Completed the 5th mission on Normal or harder.
Wake Up, Buttercup
Destroyed the Corvette's engines & escort in under 3 minutes in the 6th mission on Heroic or harder.
You Flew Pretty Good
Completed the 6th mission on Normal or harder.
Earned a Triple Kill while Jetpacking in Campaign, Firefight or Matchmaking.
Into the Howling Dark
Completed the 7th mission on Normal or harder.
The Start of Something
Reached the rank of Corporal in the UNSC.
I Didn't Train to Be a Pilot
Killed 3 of the anti-aircraft batteries during the 8th mission.
Dust and Echoes
Completed the 8th mission on Normal or harder.
Tank Beats Everything
Finished the 9th mission on Legendary with the Scorpion intact.
Banshees, Fast and Low
Hijacked a Banshee during the Reach Campaign.
This is Not Your Grave...
Completed the 9th mission on Normal or harder.
If They Came to Hear Me Beg
Performed an Assassination against an Elite to survive a fall that would've been fatal.
Send Me Out... with a Bang
Completed the 10th mission on Normal or harder.
Folks Need Heroes...
Completed the Campaign on Heroic difficulty.
The Soldier We Needed You To Be
Completed the Campaign on Normal difficulty.
What's a Killing Spree?
Earned a Killing Spree in multiplayer Matchmaking.
Be My Wingman, Anytime
Let a teammate spawn on you 5 times in an Invasion Matchmaking game.
Won a game of Invasion in the 1st phase.
Earned a First Strike Medal in a Matchmaking game.
Knife to a Gunfight
As an Elite, killed 5 Spartan players in Matchmaking.
Scored 15,000 points in Score Attack Firefight Matchmaking.
Earned a Killionaire medal in Firefight.
Game, Set, Match
Completed a Firefight set on Legendary without dying.
Scored 50,000 points in a Firefight game.
Blaze of Glory
Scored 200,000 points in a Firefight game.
Heat in the Pipe
Scored 1,000,000 points in a Firefight game.
A Storage Solution
Used the File Browser to upload a file to your File Share.
One Down, 51 to Go
Completed a Weekly Challenge.
Cool File, Bro
Recommended a file to someone.
A New Challenger
Completed all of the Daily Challenges in a given day.
An Honor Serving
Reached the rank of Captain in the UNSC.
Lemme Upgrade Ya
Advanced a Commendation to a Silver state.
Make It Rain
Purchased an item from the Armory that required the rank of Lt. Colonel.
Defiant Map Pack Title Update DLC achievements
Return to Sender
Defiant: Returned two flags in a matchmade CTF game.
Defiant: Killed 3 players with the Oddball in a matchmade Oddball game.
Candy from a Baby
Defiant: Captured two flags from an enemy capture zone in a matchmade Stockpile game.
Noble Map Pack Title Update DLC achievements
Totally Worth It
Noble 1: Earned a Double Kill from the Grave in multiplayer Matchmaking.
Noble 1: Earned a Double Kill with the shotgun in multiplayer Matchmaking.
Noble 1: Killed a player at long range with the DMR in a matchmade Slayer game.
You Ate All the Chips
Noble 1: Your team collected all of the flags in a matchmade Stockpile game.
Poppin' & Lockin'
Noble 1: Destroyed a vehicle using Armor Lock in a matchmade game.
Noble 1: Earned a kill in a matchmade Rocket Race game.
Noble Map Pack DLC achievements
You Blew It Up!
Noble 1: Your team blew up the research facility in a matchmade Invasion game on Breakpoint.
Defiant Map Pack DLC achievements
Don't Touch That!
Defiant: Prevented the attacking team from touching the flag in a matchmade 1-Flag CTF game.
Paper Beats Rock
Defiant: Assassinated a player that just exited Armor-Lock in a matchmade game.
Defiant: Was the last surviving uninfected player in a matchmade Infection game.
Anniversary Map Pack DLC achievements
Anniversary: Earned 3 headshots in a row in a matchmade game.
Anniversary: Infected 3 players in a single round in a matchmade Infection game.
Stick it to the Man!
Anniversary: Killed the flag carrier with a Plasma Grenade in a matchmade game.
Anniversary: Performed a Beat Down on an enemy while using the Jetpack during a matchmade game.
License to Kill
Anniversary: Ran over 5 people with a vehicle in a matchmade game.
Anniversary: Captured 10 skulls at once in a matchmade Headhunter game.
From Hell's Heart
Anniversary: Killed an enemy with their own grenade that was stuck to you in a matchmade game.