Here is the full list of all 26 The Secret Order 3: Ancient Times achievements. It takes around 3-4 hours to unlock all of the achievements on Windows.
Bring back peace to Forest of Hope.
Gain support from the elves.
Gain support from the fairies.
Gain support from the dwarves.
Help the innocent in need.
Complete the Game!
Collect the Thor rune.
Collect the Aegir rune.
Collect all of the turquoise unicorns!
Collect all of the amethyst griffins!
Collect all of the golden dragons!
Collect the Freya rune.
Seek out the Land of Ice.
Seek out the Land of Fire.
Collect the Loki rune.
Take a royal flight.
Collect the Heimdal rune.
Act against all odds.
Reach the shores of ancient city.
Collect the Odin rune.
Finish four Hidden Object Scenes without using a hint.
Finish eight mini-games without skipping.
Finish a Hidden Object Scene in 90 seconds without any hints.
Begin your journey.
Adopt the baby griffin!
Finish one mini-game without skipping.