TL;DR
Have achievements duplicated(?) as milestones that occur within each new game.What ?
Have 'milestones' in addition to achievements that can be reached within each new game, perhaps with a less shiny graphic and slightly less fanfare.I'd kind of like to be told that "You're doing it right" after using construction robots enough each time, rather than just once.
Why ?
Being able to achieve an achievement again (sort of) leads to a greater sense of achievement. =)I know you can reset achievements, which is close to what I'm suggesting, but I don't want to get rid of the fact I achieved an achievement, merely have it pointed out that I've once more reached the milestone that would have lead to the achievement.