Okay, so I'm now thinking that there is also a noble family or merchant guild or something who are dabbling in chaos worship, and starting to lean towards nurgle, and maybe should be stopped before releasing some pox into the hive. I'm thinking that the Inquisitor's private army-type thing are led by one person, and the guild/noble house are led by one person, and the Inquisitor is just behind the scenes with both, fuelling them and guiding them before pitting them against each other (being Istvaanian). So maybe it's up to the players which they investigate, or whether they do both.
So, the first mission will still be that assassination, but on the assassin's corpse (or upon interrogation) they discover the symbol of this private army tattood on his shoulders, and tickets to a show in the local Arena in his pockets.
The second mission will involve them going to the Arena, before getting challenged and taken to the head of this private army. His mooks attack them, but in the time it takes them to kill those, another one is covering them with a flamer, and tells them to step outside (into the pit of the arena). From there it'll largely depend upon their actions what happens, so I can't really plan for that now.
I'm doing some houseruling with this, so I thought I'd see what you guys think:
1) Sg tests. If the PCs find something and take a Sg test for it, I won't tell them whether they've passed or failed, but instead give them information based on the results. A good pass is they know it; a slight fail/pass is they don't know/don't know much, and a severe fail will be that their character gets completely the wrong end of the stick and I give them bogus information.
2) Injuries. The injury system still confuses me, so I thought to speed up the games I'd streamline it by making it simpler, but also more dangerous (so I'm also limiting the availability of bolt weapons in this). Any ideas for how I can do this fairly, without just making it all up on the spot?
3) Character advancement. I want some sort of char advancement to be available, even if it's just me rewarding them with boost in stats at reasonable times. Has anyone done anything like this before, and if so how did it work out?