Here is the full list of all 12 AMY trophies - there are 7 bronze, 4 silver and 1 gold.
Finish Chapter 01
Finish Chapter 02
Finish Chapter 03
Finish Chapter 04
Finish Chapter 05
Push an enemy onto an electrical device
Complete a level without the monsters draining Amy's energy
Avoid being seen by the enemy by concealing yourself in a hideout
Find Amy
Finish the game in Easy mode
Finish the game in Normal mode
Finish the game in Hard mode