I was playing Uncharted while psn was down and all the achievments I got didn't go to my PSN account. How can I get them onto my account?
Welcome to the PlayStation Community.
Achievements, you mean Trophies surely, we are PlayStation after all not Microsoft?
Have you synced your trophies to the Sony server?
Customer Service - 1-800-345-SONY (7669)
Available Mon to Fri From 8am - 8pm PST