How to unlock: You have to detonate a Trip Mine with a thrown enemy (single-player mode).
Commentary: This trophy requires you to use two different skills. Setting mines is a skill connected to Combat, while throwing enemies is done by using Biotics.
The method to acquire this trophy is relatively simple. You will need three different abilities - Trip Mine, Pull and Throw. Start by placing a Trip Mine in an open field - don't put it in between obstacles and near buildings, Afterwards, grab any enemy (you can't grab those protected by shields and/or armors) with the Pull ability, wait for the enemy to fly towards your character, aim at the previously set up Trip Mine and throw the enemy at it with the Throw ability. If everything went fine, the enemy will crash into the mine, detonating it and granting you a trophy. If not, just repeat the whole process.