Ok. That's obvious from the story. The motives for the assaults and not nuking the Hideout are somewhat clear.
What is not understood:
- why would spartans, raiders, humanists etc. assault the Hideout with Plasma weapons, including the high-tier ones?
- could there be some sort of intermediate (native weapons) and very difficult scenarios as well (armored units only)? Why would Guild representatives (and other non-fighters) break into the hideout with the squad?
- it'll be nice if some units were able/forced to destroy the keytiles, as only the Extractors were destroyed a couple of times, not intended, with a reaction fire of Plasma Scorchers in many-many crackdowns.