When it comes to Defence, the Detonator can assist in defending the intelligence thanks to his handy Mine Launcher. It's rather simple. Just place your mines close to the intelligence, get to a safe spot (if you can see the intelligence from the locker room, that's a good spot) and when an enemy comes along, Right click and KABLOOEY! He's gone! This strategy is pretty straight forward and works for all maps. Just plant your mines, retreat to a safe spot where you can be safe and see the intelligence and blow it up whenever an enemy gets close. I rather perfer placing mines at different angles so that the enemy can get full blast rather than just the bottom.