Bring three Bounty targets back alive.
Complete three Templar Hunts and their challenges.
Assassinate fifty enemies.
Kill three enemies with a single stack of hanging barrels.
Complete Memory Sequence 3.
Reach combo level 40.
Complete Memory Sequence 2.
Complete Memory Sequence 1.
Halo 2: Complete Gravemind.
Halo 2: Kill an enraged, berserk Brute using melee.
Halo 2: Kill 7 opponents from behind in a row without being spotted.
Halo 2: Complete Quarantine Zone.
Halo 2: Activate Terminal 9 on Quarantine Zone.
Halo 2: Complete Sacred Icon.
Master A Class Events to unlock S1 Class Events at Horizon Hot Wheels
Complete a Bucket List challenge at Horizon Hot Wheels
Prove you have the chops to unlock A Class Events at Horizon Hot Wheels
Acclimatise yourself and complete your first race at Horizon Hot Wheels
Master a track by earning 3 medals for the first time at Horizon Hot Wheels
Survive your first drive at Horizon Hot Wheels
Complete game on any difficulty
Release friend
Unlock demolition perk 8
Defeat the London Monitor
Unlock stealth perk 3
Unlock stealth perk 5
Unlock stealth perk 8
Unlock demolition perk 3
Unlock tactical perk 2
Locate the underwater stash
Unlock tactical perk 3
Unlock tactical perk 1
Find the Laserkraftwerk
Unlock stealth perk 7
Locate the resistance
Unlock demolition perk 2
You have uncovered the truth about Brad.
You made a big impression at the Paleto Bay Chicken Festival.
It's time for a little getaway.
You performed a classic blitz play.
You delivered an unsuspecting victim to the Altruist Cult.
You stole an experimental super weapon from Merryweather... and gave it back.
You made a profit over your total investments in the stock market.
Activate Meridian.
Reboot the Pathfinder.
Activate the Remnant city.
Kill 2000 enemies.
Unite the outposts against a common threat.
Hit 25 floating enemies with Concussive Shot, Lance, or Incinerate. (Single-Player)
Stop the Roekaar leader.