It took my team like 10 tries. We had 280 nightstalker, 265 blade dancer and 289 Voidwalker.
Getting past the warsat:
Make sure everyone's heavies are full. As soon as the first ship comes, keep shooting the turret (primary+1/2 rockets) to blow it off.
From then, everyone should be fine just by killing the dregs with void heavy/special weapons.
Once it says something like "there's more coming blah blah"(should be at around 35% captured), make sure everyone now turns around and try blow off the second ships turret while taking cover from the snipers.
This part should be when someone uses a super to quickly take down the group of snipers.
Keep clearing them out and once the second ship is cleared(maybe at around 65/70%) there should be another one where the first ship spawned. Try and shoot down the turret and I suggest jumping around while doing it so the exploding balls won't kill you. Once the turret is down, all you have to do is clear out the rest of the enemies and you should be done.
I hoped it helped for the people struggling.
UTube: chrisgen68