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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0G-Vidmaster: PrimeTime!- Kill 30 enemies in 2 minutes 0G-Vidmaster: Can i haz Recon?- Complete the 6 other vidmasters and the answer is yes you can haz recon 20G-You owe me a Buck- Complete Buck's Mission(s) 20G-Shall We go Dutch?- Complete Dutch's Mission(s) 20G-Can Disney Handle This?-Complete Mickey's Mission(s) 20G-Where Art Thou Romeo?-Complete Romeo's Mission(s) 20G-Truth or DARE?-Complete Dare's Mission(s) 125G-ODST Solider-Complete campign on Normal or higher 125G-Hardcore ODST-Complete campign on Heroic or higher 125G-Who you Callin the Rookie?!-Complete the campign on Legendary 10G- No ODST left behind-Survive an entire mission without dying 25G-Experienced OSDT-Kill an enemy with every gun in the game 30G-Set up, troopers!- Survive an entire set on any diffculty in Firefight 40G-Are those your friends?- Find every skull in the game 60G-I hope the covenant likes guests!- Complete the campign on four player CO-OP, any diffuculty This adds up to 600G, enjoy, HALO:ODST RULES!!!!!!!!