Here is the full list of all 12 Element4l trophies - there are 8 bronze, 3 silver and 1 gold.
Finish Element4l
Finish "Willpower" stages
Finish a level with less than 30 actions
Achieve a gold medal in any level
Beat Mr. Smooth in any level
Finish "Mind" stages
Finish "Heart" stages
The game begins...
Finish a level in less than 60 seconds
Find all lost sparks
Finish the rollercoaster level in less than 60 seconds
Beat the dev in any level