Here is the full list of all 19 Hidden Through Time 2: Myths & Magic achievements worth 1,000 gamerscore.
Complete all other achievements.
Find all 80's objectives.
Find all Greek objectives.
Find all Medieval objectives.
Find all Arabian objectives.
Find all objectives in the Campaign.
Find your first secret objective.
Find the Village of the Dragonlings.
Find the Island of Ithaca.
Find the Tinkering Workshop.
Find the Cave of the 40 Thieves.
Find your first objective.
Find 10 different objectives.
Find 25 different objectives.
Find 50 different objectives.
Create and save your first map.
Complete and rate an online map.
Complete and rate 3 Online maps.
Complete and rate 5 Online maps.