The hedge maze is a real eyesore; do some Protonic pruning.

At the beginning of the 'Lost Island' mission you will reach the Shandor castle. The gates closes at front of your eyes and you have to go downstairs to the garden to wind the gate chain. At the garden you will see a maze of hedges. For this trophy you need to burn down every hedge you can find. Use the Proton Gun's secondary fire, the Boson Dart, to set the hedges on fire. Make sure that every single hedge in the garden is burnt out to get the trophy.

Replay Mission: Lost Island / The Hedge Maze