Yeah, the hideout was a tad frustrating, as the stealth mechanics seem a bit buggy. It isn't clear how much sight-lines and vertical sight the guards have. Died a few times to "really? You saw me there?"
But I basically stayed overhead the whole time. One weird glitch, I had left a bomb over in the first area, where I snuck past, and I accidentally set it to detonate, and the guy from the first room "saw me" on the rafters in the second room, through the wall. Weird.
Also, that section should just reset/throw you out rather than kill you. It just takes longer, at least the autosave is good.
The "boss battle" afterwards is hilarious, however.
I am now inside a giant camel.