Here is the full list of all 21 Chasm trophies - there are 7 bronze, 5 silver, 8 gold and 1 platinum.
You have fulfilled the prophecy of the Watchers.
Complete the game on Hard difficulty.
Complete the game as a Mortal.
Defeat a boss without getting hit.
Unlock all the Bestiary entries.
Defeat Ulak.
Explore 100% of the map.
Break all the crates in the game.
Find all the Journal Entries in the game.
Complete all villager sidequests.
Rescue all the missing villagers.
Find all the Powerups in the game.
Become the Arena champion.
Defeat the Shaman.
Defeat King Trell.
Spend 5,000 gold.
Defeat the Golem.
Defeat 1,000 enemies.
Defeat the Catakiller.
Defeat the Wendigo.
Defeat 100 enemies.