The Chapter 8 - In the Dark Add-on for Final Fantasy XV Pocket Edition (Win 10) has 8 achievements worth 95 gamerscore.
Completed all treasure hunts.
Found all hidden cactuars.
Departed Tenebrae for Gralea.
Acquired the Trident of the Oracle.
Met the watchful gaze of Shiva.
Found the hidden treasure in Tenebrae.
Found all cactuars in Tenebrae.