I tested it with no luck Al , the super weapon from the Qirex is not really powerful and in this challenge you only have that one
Most of the time i damage ships but not enough to blow them up, so a quake from other contender destroy 2 or 3 ships in a row ( i did the job at 90% but not getting eliminations for myself)
I want to unlock that last challenge and not being stuck with this Macheon 2

@Auri : except what Rob put in his Dl Audio FX section you already have, that's all i know