Detonator is an event type in the fury campaign where you have to score a lot of points by shooting mines and bombs. However for the achievement, you can't shoot your cannon, but you can use your EMP (
button).
From the main menu, go to Racebox, choose Detonator (game mode WipEout HD, race type Detonator), press
for confirm. Choose a shorter track, so you have to survive for less time, and also with a longer track you have more chance to make a mistake.
I chose Corridon 12, because with the 2 separate routes the mines also go on them separately and you can experiment with it which one is easier for you.
You don't have to bother with throttle, you just have to avoid mines, bombs and the wall. Mines do 10 damage, bombs 20, wall a little less. You can use EMP, but its not recommended to spam it, when it charges, save it for emergencies, when you have a lot of mines in front of you after a turn for example. After every lap (stage) your ship gains back 10 energy. After 9 complete laps, the trophy unlocks.