so i got my imperial class star destroyer... i made a fleet build... imp 1 two victory 1 with admiral motti. the rest of the build is damage fluff.... here's my question... how the heck does the rebel fleet beat this? outside of just the right objective, what do they do? thats 34 hull points. in total. And then there is the shields. I am quite perplexed at this.... please someone give me a counter...

Guns...lots of Guns

Or...more accurately I'd say bombs. Lots of bombs, from little fast ships that can all gang up on one of your opponents' ships and volley them down. Having a good contingent of B-Wings/Y-Wings with X-wing cover, and some Intel, plenty of squadron pushers, and a couple decent ship-based guns should give you a strong advantage.

Also, and more importantly, you need to outfly your opponent. Do not stay in front of that line. You will die a rapid and fiery death when the triangles are pointed at you, getting to the sides will greatly increase your survival chances.

What do you have available to fly?

Barring the objective (which you shouldn't) the Rebel needs only destroy more points than the Imperials, not the entire block of Imp ships.

Mon Mothma is great at dealing out more damage than her ships take. Akbar can also turn tiny covettes into engines of destruction