Apologies if this has been mentioned before but this may save someone some time. I was travelling recently and had some time to kill so I tried to do some acheivements without a connection. You can't get them, even when you reconnect they don't transfer. Slightly annoying.
ACR -"a persistantly-lilting pendulum that literally brings abode a new quelling regulation at precisely the correct minute, or the steel involving Damocles itself"