The details on the raid are shown in a new quest that you get once you start the raid and leave, then visit Shiro, exactly the same as eris for the hunger pangs. This new quest is called metal and flesh. Minor spoilers ahead for the quest and raid: [spoiler]The first part of it is killing the archpriest outside of the giant metal servitor. We can see him in the first trailer labeled as the machinist. The second is "repairing the siege engine." I assume this is the death zamboni. So it sounds like right after the archpriest there is a jumping puzzle, then zamboni, then we destroy the zamboni and jump down. I assume there's another jumping puzzle after we jump back in the wall, then we repair the zamboni. Also from the raid armor we know well have to move shock cores like in the iron tomb mission or like the beginning of kings fall. This is probably for fixing the siege engine. Lastly we need to kill Aksis, this extremely bioengineered fallen archon prime. He is the spider legged fallen we see at the end of the opening cutscene.[/spoiler] Hope this info is helpful!