Story related, pops up at the entry hatch door in site lambda (just before meeting Catherine for the first time inside).
(achievement pop ups in this game are little delayed.)
Extended Timestamps:
00:00:00 - Toronto
00:06:55 - Site Upsilon
00:17:10 - "Answering the Call" Achievement
00:24:30 - Upsilon Shuttle station
00:38:45 - Site Lambda
00:38:55 - "Chasing Catherine" Achievement
00:47:10 - The Curie
01:00:45 - Site Delta
01:02:00 - "Stranded" Achievement
01:12:45 - "The DUNBAT" Achievement
01:11:20 - Site Theta
01:30:45 - "Plan B" Achievement
01:51:40 - "Killed the Dream I Dreamed" Achievement
01:52:10 - Site Omicron
02:25:10 - "A New You" Achievement
02:25:35 - The Descent
02:33:20 - Site Tau
02:45:45 - "Endangered Species" Achievement
02:50:25 - Site Alpha
02:58:30 - Site Phi
02:58:50 - "Your Expressway to the Stars" Achievement
03:10:10 - The Ark
03:13:10 - "The End" Achievement
03:13:20 - Subscribe!