Full list of all 15 Gyromancer achievements worth 250 gamerscore. It takes around 30-35 hours to unlock all of the achievements in the base game on Xbox 360.
The base game contains 12 achievements worth 200 Gamerscore, and there is 1 DLC pack containing 3 achievements worth 50 Gamerscore.
Acquired 7 awards.
Acquired 3 awards.
Execute a Gyro Chain.
Hunt down Temperance.
Arrive at one truth in Tracks of Night.
Pass the tests of the Stones.
Acquire 15 awards.
Acquire 30 awards.
Acquire 50 awards.
Acquire 75 awards.
Acquire 100 awards.
Acquire 120 awards.
Defeat the Dragon Lord at Dragon's Haven.
Defeat the Wolflord at Rivel's Trial.
Defeat the Scion at The Four.