I have started playing again after an unknown number of years - I don't remember. Could be 10 years, maybe longer. I forgot everything, so I'm going through the training missions, etc.

Is there a way to see a timestamped activity log of my account/characters? For example, when I last logged in as a particular character.

Thanks.

Most commonly used information of that type is stored client-side. So, assuming you have a fresh client install, then no, none of that is available.

Obviously we have stats and things on your character, accomplishments and so on in the Character tab.

Mission availability is determined by past progression through various trees and things, and those Accomplishments are stored server-side, so your current "mission state", when viewing the available list of missions, is true to where-ever you left off last time.

But, details of prior mission history and progress is stored client-side. So, again, assuming a fresh install, that information is not available.