The mission is Long Night of Solace, on Rally Point Alpha.
After defending Anchor 9, you will get a cutscene and you will end up near the Corvette. Go far out and turn back so you have enough space to take out the 4 engines. After that, take out the Seraphs and the Banshees. The Banshees are easy to take out, as the rockets will instantly take them out, but the Seraphs are harder. You have to first take down the shield with the machine gun, then kill them with the rockets. Once you down to about 4 enemies, red arrows will point to the remaining ships. Once you are done, BLEEP BLOOP.
Video courtesy of RoosterTeeth