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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[b]Coward[/b], negative 10g, Sit back and watch your squad die [b]Human Tank[/b], 15g, Get a killtacular with a rocket launcher [b]Now Thats What I Call A Headshot[/b], 5g, Kill a brute with a shot to the groin. [b]How Did You Miss That?[/b], 0g, Kill nothing woth a shot from a splazer when an enemy is 5ft (roughly 1 and 1/2m) away from you [b]Tail Between Your Legs[/b], 0g, Run away from a boss fight (yes I stole that from GH3)