Since there is no confirmation on what the achievements will be for the game, aside from the time being, let's create our own!
Here's some of mine:
"KEEP IT CLEAN - 10 GS: destroy all environmental objects within the city."
"Terminator - 50 GS: Never use a health pack"
"Ray Charles? - 50 GS: Never use the low-light mode, VISR"
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Halo 3: ODST Feet first 5g: Drop into hell for the first time Better than the chief 50g: Complete one level with just a magnum with the bash your way to better health skull on Who is the new guy? 5g: Complete campagin on easy The new guy125g: complete campagin on Normal Rookie no more 125g: Complete campgin on Hertic True Helljumper: 12g Complete campagin on Legendary Nothing specail: 200g Complete campagin on Mythic with all skulls with 4 people with out using health packs with just SMGS. I has mythic 5g: Play on one of the new Mythic map packs Bang and clater 25g: Compelte Ducths flash back. Eye for an eye 25g: Complete Romeo's flash back Cowbell 25g: Complete Bucks flash back. [Edited on 06.14.2009 1:12 AM PDT]