Here is the full list of all 12 Zenith trophies - there are 7 bronze, 4 silver and 1 gold.
Destroy 100 barrels
Defeat 500 enemies
Finish the game
We need to protect the pure!
Find Brekka
Defeat the lava demon.
Defeat 100 enemies
Save the Skree
Destroy 50 barrels
Defeat 50 enemies
Recover the artefact
Defeat 25 enemies