50Achievements
Elder Signs
Halo 3: View 2 different sigils on Valhalla.
(0.1%)
Third Time's A Charm
Halo 3: Play a game of Halo 3 on the 25th of any month.
(7.8%)
Devastating
Halo 3: Complete all Halo 3 Legendary campaign missions in under 3 hours.
(0.1%)
Dawn
Halo 4: Complete Dawn.
(18.5%)
Requiem
Halo 4: Complete Requiem.
(13.7%)
Forerunner
Halo 4: Complete Forerunner.
(11.1%)
Infinity
Halo 4: Complete Infinity.
(10.3%)
Reclaimer
Halo 4: Complete Reclaimer.
(9.3%)
Shutdown
Halo 4: Complete Shutdown.
(8.8%)
Composer
Halo 4: Complete Composer.
(8.9%)
Midnight
Halo 4: Complete Midnight.
(8.3%)
Piece of Cake
Halo 4: Beat the par time on Dawn.
(4.4%)
Interloper
Halo 4: Beat the par time on Requiem.
(0.3%)
Raging in the Dark
Halo 4: Beat the par time on Forerunner.
(0.4%)
Ouroboros
Halo 4: Beat the par time on Infinity.
(0.5%)
Gimme That
Halo 4: Beat the par time on Reclaimer.
(0.3%)
Shut. Down. Everything.
Halo 4: Beat the par time on Shutdown.
(0.4%)
Symphony of Pain
Halo 4: Beat the par time on Composer.
(0.5%)
Countdown
Halo 4: Beat the par time on Midnight.
(0.4%)
Easy As One Two Three
Halo 4: Beat the par time on all Halo 4 levels.
(0.2%)
Gunslinger
Halo 4: Beat the par score on Dawn.
(1.7%)
Dark Fortress
Halo 4: Beat the par score on Requiem.
(1.1%)
Shadow of Sundered Star
Halo 4: Beat the par score on Forerunner.
(1.2%)
Jungle Warfare
Halo 4: Beat the par score on Infinity.
(6.2%)
Librarian's Pet
Halo 4: Beat the par score on Reclaimer.
(1.9%)
Emergency Shutdown
Halo 4: Beat the par score on Shutdown.
(1.9%)
Head Banging
Halo 4: Beat the par score on Composer.
(3.5%)
Witching Hour
Halo 4: Beat the par score on Midnight.
(1.7%)
You Had it Coming
Halo 4: Beat the par score on every Halo 4 level.
(0.5%)
War
Halo 4: Activate Terminal 1 on Requiem.
(2.7%)
Lord of Admirals
Halo 4: Activate Terminal 2 on Forerunner.
(8.2%)
Charum Hakkor
Halo 4: Activate Terminal 3 on Infinity.
(4.3%)
Flood
Halo 4: Activate Terminal 4 on Reclaimer.
(4.5%)
Knights
Halo 4: Activate Terminal 5 on Shutdown.
(1.7%)
Justice
Halo 4: Activate Terminal 6 on Composer.
(1.7%)
Cryptum
Halo 4: Activate Terminal 7 on Midnight.
(1.3%)
Terminus
Halo 4: Activate all Halo 4 Terminals.
(0.6%)
Wake Up, John
Halo 4: Complete every level of the game on Normal difficulty.
(5.3%)
I Need a Hero
Halo 4: Complete every level of the game on Heroic difficulty.
(2.1%)
The Legend of 117
Halo 4: Complete every level of the game on Legendary difficulty.
(1.2%)
Lone Wolf Legend
Halo 4: Complete every level of the game on Legendary difficulty, by yourself.
(0.5%)
This is my Rifle, This is my Gun
Halo 4: Carry a UNSC weapon all the way through Forerunner on Heroic or Legendary.
(0.2%)
Bros to the Close
Halo 4: Complete Infinity without one preventable Marine death on Heroic or Legendary.
(0.1%)
Explore the Floor
Halo 4: Trick or force a Hunter to fall to its demise on Shutdown on Heroic or Legendary.
(0.8%)
Give Him the Stick
Halo 4: Take out both Hunters using only the Sticky Detonator on Composer.
(1.9%)
Chief, Smash!
Halo 4: Kill 3 Crawlers in one hit with the Gravity Hammer on Midnight.
(0.6%)
You're No Chips
Halo 4: What do Marines know about sticks?
(0.8%)
A Long Time Ago
Halo 4: Play a game of Halo 4 on the 6th of any month.
(6.7%)
You're Joking
Halo 4: Complete all Halo 4 Legendary campaign missions in under 3 hours.
(0.1%)
He's Running a Marathon...
Halo 2: Spot the developer in the opening cutscene of Gravemind on Legendary in Classic Mode.
(0.4%)