The Pillar of Autumn was chaos enough, but at least some exploration could manage to do it. To be fair though, I have no idea how it ended since I wasn't even near the pods when it cut.

Then we get to Halo. Ok, fair enough, prevent the Cyborgs from landing. That at least was kinda clear, though I didn't get that part about exploding Pelicans. [Weren't they just despawning?] But, I did get through it.

Then we have Truth and Reconciliation... Defend the ship and prevent humans from going in.
How in hell? I'm at the human start of the map and we're destroying them. I can steal a shotgun and basically spawnkill all of their infinite spawning lazy bums. How long should I do this for? Sometime, I get Cortana that tells me they are trying to get one specific turret down. Ok then. I defend this thing. But either that I defend it, or climb on it... The result is the same. The noise from the turret becomes tiresome a long while before any signs of anything happening. One hour in and there is no progress from any side...

Is this a joke? How am I supposed to get to the next level? Ain't Assault on the Control Room used in the promotional pictures?

Is this a difficulty setting problem? As in, should I play it at a specific difficulty for the AIs to unstuck themselves? I was going for a quick easy run to test if this was worth playing in coi-op with friends, but if it doesn't work, the appeal of playing as a grunt fades fast.