Here is the full list of all 10 SkyKeepers trophies - there are 3 bronze, 6 silver and 1 gold.
Earn All other trophies
Dispatch the Forest Beast
Destroy the Formidible Construct
Banish the Wa'kine Imposter
Rebuild all 3 buildings to max level.
Knock an Wa'kine out of bounds
Get a 50 hit combo
Destroy 1000 objects
Spirit Walk 500 times.
Destroy 500 Wa'kine