i rescued all of them and got my 100GS at the end
and yeah it would be good if u could walk around, so u can still take photos of splicers, cos at first i hardly took any, as i didn’t realise they got u achievements
and i could continue to upgrade weapons, i only came across enough of them upgrade stations to upgrade 3 and a half weapons 
cos it doesn’t let u it means u have to start the game again i guess lol
