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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How about these Silent assassin, 50GS: beat a campaign level on normal difficulty or higher using only the silenced SMG and beat downs/assassinations. Over-Stick, 20GS: In firefight blow up four enemy's with a single sticky grenade Hail Mary, 30GS: Throw a sticky grenade 30 yards or more and stick an enemy