I went to Tenpenny's Tower and tried to use diplomacy to let the ghouls in. After several attempts I was stuck, so I decided to let them in the rough way.
I opened the basement passage and went to take a look at the carnage.
Before the ghouls slayed everyone, I was trying to enter my room but I was told that it wasn't safe to enter at that moment. After the ghouls slayed everyone, I was trying to enter my room (I have found one or two keys for it) but I was told that I needed a key.
I gave up on that, but I wanted at least some reward from Roy, and I discovered him laying dead on the floor of the main hall. Can I still get a reward for the mission?