Here is the full list of all 19 JUJU trophies - there are 17 bronze and 2 silver.
Complete a level in co-op.
Complete any level without collecting an amber.
Defeat Calypso.
Complete all unlockable levels.
Defeat Cobos and collect his key part.
Gather every Coin in the game.
Find all secret teleports.
Unlock all skills.
Defeat Octobos and collect his key part.
Defeat Robos and collect his key part.
Complete one unlockable level.
Defeat Frobos and collect his key part.
Unlock a new skill.
Make 4 enemies dance at once.
Collect more than 100% of ambers in any level.
Hit 3 enemies with one dash.
Find a secret teleport.
Complete any level without losing a heart.
Gather all Coins on one level.