Little Sister achievement query

[Martino]

Ok so I was wondering about the achievement for taking care of all the little sisters. I just thought, if I find complete, the game and find all of them, aside from one in Neptunes Bounty or somewhere early on, can I just start the game, go take care of them and get the achievement or would I have to play the entire game again and take care of all of them once again.

[Kastro]

well if you start a new game you will have to find them all again but you can use the bathysphere to go back to the previous areas to get them except for when you get to the final bit of the game

[Martino]

Oh yeah good point. Anyways where have you been? Haven't seen you since you turned green.