ok im havin the hardest time I keep tryin and tryin but to no avail I fail each time the dreaded gummi ship mission 3 for end of the world I cme close every time but cant seem to pass it u need a score of 600 to pass my closest was this morning at 591.  I cant seem to hit that 600 mark help please

Have you tried modifying your ship a bit? Some modifications can help make your ship better and gain more points.

I made my ship as big as I could, with as little engines. Use Drain-G or Osmose-G to get stuff out of reach (remember to actually activate them, they don't do anything by themselves). Then start blasting