First off ... WARNING! Spoiler alert! Your treading on spoiler charted waters! The list of achievements available after the jump sort of tell a bit about the Mass Effect story, plot, etc., etc. But, if you are un-phased by such stuff, then click away. Though, In general, the achievements are pretty decent and range from weapon achievements, to story achievement to the Completionist achievement which you can earn for "completing the majority of the game" (nice and vague, we like that). Oh, and be sure to note that there's Gamerscore to be had if you "complete any romance subplot" ... we wonder what that's all about. Risque!
[Thanks, to everyone who sent this in]