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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Brigadier-50G: Complete all levels on Legendary. Keep trying-5G: Die 10 times in 1 level. (Suicide does not count.) Really!-20G: Die 20 times in between Rally Points. (Suicide does not count.) Pathetic-30G: Die 30 times before reaching first rally point. (Suicide does not count.) Private-20G: Complete all levels on Easy. Sergeant-30G: Complete all levels on Normal. Major-40G: Complete all levels on Heroic. Reaper Spree-10G: Get a Killing Spree with the skull. You must know what your doing!-30G: Win 10 Custom games in a row with at least 10 players in each game. All in a days work-50G: Beat Campaign and rank up in matchmaking within 24 hours. (Doesn't have to be first time beating Campaign.) Legendary Status-100G: Beat Legendary 10 times.