No Room for Humanity
Hatchet's plan was simple: tame and train ghouls to work for the Resistance. You were able to tame an alpha ghoul down in the tunnels. Hatchet used the alpha ghoul to get four more ghouls to 'join' the Resistance. In the meantime, you raided a PPD lab to recover detonators. Vagabond would hook the detonators up to the collars of the ghouls, setting them to explode when the time was right. Before Vagabond could do this, you had to kidnap three members of the PPD to feed the hungry ghouls; Vagabond was not willing to go near a small group of ghouls who were hungry for human flesh.
When all that was done, you raided a large PPD office with the ghouls, making a bold statement to those who came to the scene afterwards: the ghouls could now be used by the Resistance, and that it was no longer safe anywhere, not even in the luxurious offices of Imperial City.