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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I'm a Survivor! - 50G Last through X amount of Firefight rounds without a single death. Scout pl0x! - 25G Get a splatter with a mongoose (on a brute) in campaign Rookie THIS! - 10G Get a Snipe/Laser kill/Rocket kill as the rookie