Diablo – Do the parts of exploration achievements for each act reset between logins if you haven’t completed them

On my second time logging in to play (first play-through), on the quest to kill the skeleton king, I decided to also pick up the Act 1 exploration achievements, like A Nice Place to Visit and Thorough Investigation.

I discovered that I hadn't received credit for any of the sections of A Nice Place to Visit, most of which I had clearly already passed through, but was forced to revisit.

Do these sub-sections of exploration achievements get wiped, if you haven't completed the full achievement, when the maps are regenerated on login?

Best Answer

No, they don't reset. What you're experiencing is a bug (that is, as far as I know, still not fixed) where achievements don't get transmitted to the server correctly and thus disappear again after starting a new session.

For example, here's a section from a news article about it:

Those users lucky enough to make it in have reported quite a number of issues. One which is drawing particular ire is the apparent loss of achievements, although responses in a Blizzard forum thread on the matter suggest the servers may just be playing catch up; the developer noted that the achievements server is getting hammered.