[Suicide Junkie]

As for the Beaumont mission, from the chatter Haynes was putting out, It sounded like the Beaumont was the bait, with the business end of the trap being you. Hence, the true goal is to wipe out the pirates, rather than just protect the Beaumont.

Most or all of the Guild missions read as protect missions, where the status of the attackers should be unimportant and only the survival of the protectee ship needs to be considered.
Unfortunately, as of this Version, the mission success trigger seems to be "Kill the enemies"