Add an upgrade to a building
Manually medicated a diseased dinosaur with the Ranger Team
Genome completed to 100%
Halo 2: Complete every level of the game on Easy difficulty.
Halo 2: Complete The Great Journey.
Halo 2: Complete every level of the game on Normal difficulty.
Halo 2: Beat the par time on High Charity.
Halo 2: Complete High Charity.
Halo 2: Complete Uprising.
Collect 3,000 campaign or playlist medals.
Halo 2: Complete Gravemind.
Halo 2: Kill an enraged, berserk Brute using melee.
Kill 5,000 enemies or players.
Halo 2: Complete Quarantine Zone.
Halo 2: Activate Terminal 9 on Quarantine Zone.
Halo 2: Drive a Scorpion while playing as the Arbiter.
Halo 2: Complete Sacred Icon.
Halo 2: Complete Regret.
Halo 2: Activate Terminal 7 on Regret.
Halo 2: Complete any campaign level without dying on Normal or harder.
Halo 2: Complete Delta Halo.
Halo 2: Complete The Oracle.
Kill 1000 Flood.
Halo 2: Activate Terminal 5 on The Oracle.
Halo 2: Beat the par score on The Arbiter.
Halo 2: Complete The Arbiter.
Halo 2: Fly the Heretic Banshee on The Great Journey.
Halo 2: Activate Terminal 4 on The Arbiter.
Released a Triceratops
Released a genetically modified dinosaur
Added a task to an ACU or Ranger Team
Researched an Item
Released a dinosaur
Halo 2: Complete Metropolis.
Halo 2: Beat the par score on Metropolis.
Halo 2: Complete Outskirts.
Halo 2: Activate Terminal 2 on Outskirts.
Halo 2: Fight alongside the legendary Chips Dubbo and listen to his words.
Halo 2: Complete Cairo Station.
Collect 2,000 campaign or playlist medals.
Halo CE: Complete every level of the game on Normal difficulty.
Halo CE: Complete The Maw.
Halo CE: Complete every level of the game on Easy difficulty.
Halo CE: Complete Keyes.
Halo CE: Activate Terminal 9 on Keyes.
Halo CE: Complete Two Betrayals.
Halo CE: Complete The Library.
Kill 100 Flood.
Halo CE: Complete 343 Guilty Spark.
Halo CE: Complete Assault on the Control Room.