Fill the night sky with Aurora Borealis

Destroy 18 Plague Tethers

Carry a Shaman Staff for 3 minutes

Find and light all 8 types of carved Ancient Murals

Collect 50 Spirit Bloom

While in Spirit Form; step on a pressure plate, an unstable platform, and walk on water

Cause the Wisp chirp 100 times

Collect 25 Spirit Bloom

Destroy 3 Plague Tethers

Awaken 5 Shaman Spirits

Stand still for 3 minutes

Complete the game and open the city.