They're still around, but it feels like no really cares all that much about them anymore.
Personally: I used to work my ass off for certain achievements, and will still try to get at least most of them in a given game, but I'm not willing to put myself through the level of hell that I used to for that one fuckin' achievement almost every game has.
Honestly the whole scoring achievements and tracking an account wide score thing is kinda dumb, especially since AFAIK the devs can set whatever values they want.