So what's the trick to getting the trophies in Stardust HD Endless mode

[Phendrana]

I got lucky with the 7 minutes. I died right as the message popped up saying I unlocked it. For the 10 nukes I just rode around destroying them as soon as they appeared. I think I got up to 11 or 12 before I died.

15 bombs is ridiculously hard. It's probably the most difficult trophy in the game.