Here is the full list of all 21 Khara: The Game trophies - there are 7 bronze, 5 silver, 8 gold and 1 platinum.
Get all trophies.
Defeat Triton.
Get into the acropolis.
Discover the principal city of the Atlantis.
Pass through the rapids.
Arrive to the Atlantis city.
Get teleport power.
Defeat the Leviathan.
Arrive to the first city.
Pass the gardens zone.
Get Ice power.
Pass the jellyfish dark zone.
Pass the falling columns zone.
Get Clone power.
First steps into the second island.
Defeat the Minotaur.
Solve your first puzzle.
Defeat your first enemy.
Get your water powers.
Reach the top of the watchtower.
Just the beginning.