In the world "20.000 Lums under the sea"
there are certain paintings where enemies are armed with rifles throwers of electric missiles.These missiles bounce on walls. Put you between an enemy and a wall then jump by top so that the missile returns to the sender
I recommend you the level "Elevator ambush"
, and don't panic if you're killed, this is cumulative.
Kill 10 enemies in this way and the trophy falls
Watch the video below if you want to see how unlock the trophy in one run (credit to : AHCommunity