If you were tasked with creating achievements for updates to or rereleases of old games for console or PC, which games would you choose, and what sorts of hallmarks would you see as being worth logging? Of course there would be the gameplay related ones, such as picking up a particular weapon for the first time, but also more esoteric ones (hopefully that don't revolve around repetitive actions that take hours to complete).
Of course, this goes hand in hand with achievement generators which were popular in the past, but instead of creating fake 'real life' achievements or adding your own ideas to games made after the achievement craze began, you would be focusing on your classic favorites.
Ideas should be example of realistic goals, however (nothing like "Beat all Wily forms in Mega Man without taking damage", not all of us are that good) and able to be obtained within a reasonable amount of playthroughs.
Any takers?