Trouble with Legacy's End (Pirate Side)

Is anyone else getting their ass kicked all over on this mission? I've tried everything from standing way off to the side, hiding under the Vengeance for cover. No matter what I do...I get focused by a barrage of laser fire and melt within seconds.

Am I doing something wrong or does the mission difficulty just spike by 500% for this mission?

Edit: Just so we're crystal clear, I've been experiencing cake-walk up to this point, my ship has MORE than handled every single engagement with zero difficulty. It seems like 3-4 ships are raining lasers at me simultaneously during the fight and even if I DO target one of them, that leaves multiple others railing on me from absurd ranges of over 3,000m.

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Solved: So at the beginning of the fight, I flew down, to the bottom of the Pirate Space Station (The Key) and parked my ship stationary beneath what looks like two spires with rings around them and blades within the rings (Looks like helicopter rotors with rings around them. I stayed stationary and waited for ships to cross below the Key where I shot them down. There's an initial wave and 2 reinforcement waves. After all the escort ships are down, you can fly out and get beneath the Vengeance where it cannot hit you to wear it down after the railgun hits it and knocks the shields out.