Okay. Some advise. I'm pretty sure the mission is level 20. You're 19. Go play crucible or replay some mission to get to at least 21 or 22. This will make the mission much easier because you will have much better gear. Make sure you have heavy ammo synths on the final boss fight and rocket launcher the -blam!- out of those minotaurs. Other than that, you may want to run with an auto rifle and shotgun. Or whatever you use best at close range. That's what's best. Good luck guardian