- Ghost Unknown
- |
- Exalted Legendary Member
They just... won't... stop... - 50G - Survive for more than 17 minutes at the beginning of Keyes after Cortana states: "threat level increasing". If you jump, you lose.
The Silent Wartographer - 50G - Send a warthog 500ft high on the level Silent Cartographer. 300ft if you decide to jump in.
Savior - 10G - Rescue all the lifeboat survivors on the level Halo. Crewman are people too!
Rampant - 50G - Survive for 7 minutes after killing Captain Keyes. Then inflict damage upon every other marine or crewmember in the game. If you get killed by a hostile marine or crewman, you lose.
Gravity keeps pulling me down - 50G - Jump to the botom of the first bridge encounter in Assault on the Control Room Then vault the warthog over the bridge.
Bonebreaking massage - 7G- Melee the corpse of any Elite that you have killed 77 times. You cannot stop for more than 7 seconds.
'Ole faithful - 10G - Snipe two or more targets with the same bullet.
Press X to... oh, wait - 10G - Kill a wraith driver before he enters his tank.
Fight, not Flight - 10G - Destroy the coward elite banshee pilot at the beginning of Halo
To the power of n - 10G - Find every powerup in the game. Medpacks are included
Leap of faith - 10G - Jump across the broken lightbridge on 343 Guilty Spark
Empty Shell - 20G - Kill all passengers of a Spirit dropship before they climb out. Only on Legendary.
Gephyrophobia - 10G - Get to the bottom bridge at the opening of Halo
To you -10G - Find the Megg
7 on the 7th -15G - Finish The Library with only 7 bullets in total from both weapons on Legendary, having only used the starting weapons throughout. Swapped weapons? You lose.
Jacked -10G - Use an über banshee on Keyes to kill at least 3 enemies.
*Note: All timer based achievements would, theoretically, use the built-in timer in Halo (i.e. the one at the end of The Maw) to show the user their progress.
That's all I can think of right now.
[Edited on 02.08.2009 12:15 PM PST]