Having decided to begin the xenos hunt, we began our journey out into the nebula to find the Eldar’s favorite little hideaway in the sector. Naturally, warp travel is a bumpy ride, so Reguba acquired a craving for paper, and Dariel got highly suspicious that everybody was a mutant. Getting off light, for warp travel through a small warp storm. Speaking of, while traversing the Warp we also came across the collective unconsciousness’ concept of cockroaches, or some other Strongly Real Concept, since it was acting the iceberg to our Titanic in unreal space. This caused BAD THINGS to happen across the ship, and so we all quickly rallied together to panic see if we can help. Sebrius tried to use his space-navy experience to calm and rally the crowds of people in the hallways (more like streets, voidships are big), but was too nervous to do much. Reguba had just finished eating a dictionary, and so did much better yelling about the Emperor, the unity of man, and the strength of said unity yada yada HAVE NO FEAR FOR THE EMPEROR IS WITH US. If I had any spare purity seals, I'd have been slapping them on every doorway I saw. It prevented overly mass void panic, at least.
Heading to the bridge hoping to find the Inquisitor, we instead found a bunch of panicking and fleeing techno lads, void technicians, essentially all those redshirts you see on the Star Trek bridge who don't do anything as Spock aims and fires the photon torpedos. Getting little out of them besides "bridge scary fire ahhh", we dramatically burst into the bridge room to see the unfathomable first actual Daemonic stuff all campaign. (Heresy, in our Dark Heresy? Emperor forbid)
A good pack of netherspawn was doing a chaotic swirling goop vortex in one part of the bridge room, while at the front (or, the part where the giant viewport/window/etc) five blue horrors were throwing warpfire all around like little tzeentchian arsonists. Seeing Daemons and horrible Warp Creatures understandably terrified the bridge nerds, and it stunned Sebrius. Reguba felt the best approach, since Sebrius was too shocked to move, was to charge the horde of netherspawn (pumpkin sized little gremlins, essentially. Even more impish than your imagination can think up) and distract them. This was a horrible waste of a turn and a fairly bad plan, mostly because swinging a giant hammer around can only squish so many netherspawn at once while they surround you. Dariel wisely decided to head -away- from the massive pile of clawy imps and chaos juice while shooting at them. Once Sebrius came to, he instantly realized that a massive horde of little gremlins is best remedied by explosives, and threw a frag grenade right into them, which did far more damage to them than Reguba's hammer could ever hope to. (There were enough of them being little idiots spinning around, stabbing the floor, whatever, that Reguba was actually far away enough to not be bothered by the explosion. This was like, a BIG room and a good fifth of it was the netherspawn orgy).
The blue horrors weren't afk for all this, and the five of them had split to the corners of the room to throw fire at us more annoyingly. Luckily they're awful shots with really stupid little T rex arms. Unluckily for everyone involved, when one ran into the nether pile to try to stab Reguba in the face, Reguba effortlessly smashed it- and then it melted into two little fire sprites. Sebrius threw another grenade while Walrond, our dear friend and kidnapped driver from last session (we wanted his car, and I wanted to adopt him, so we did!) showed up and almost had a heart attack seeing the incarnate forms of thought and madness.
Dariel engaged in close combat with two of the horrors on one end of the room after one grazed his face with thrown warpflame, while Reguba and Walrond dissipated the Netherspawn and brimstone horror-fire creatures by shooting them with exploding Bolter rounds and then smashing them with a giant hammer. Without the swirling mass of spawn, the blue horrors had far less advantage in numbers, and were fairly quickly dispatched by a mixture of bolters exploding them and hammers smashing the flames that came from their exploded bodies.
Having secured the bridge, we dug out one of the surviving bridge crew from underneath his charred terminal, set him to work cleaning up the fire while we went to find the Inquisitor. (luckily once you kill daemons most of their actual bodies dissipate into the nether).
Deciding that the best place to find her is the interrogation chambers where we had the surviving (and maimed) eldar, we went deeper into the ship, calming warp panicked men on our way through prayer and loud yelling. On entering the interrogation room, we found Supplicator Alethos (your friendly interrogator) in an awful state, panicking and freaking out while a maw of teeth and darkness took up half the room. On seeing this, Reguba panicked and fled, Dariel freaked similarly, and Sebrius lost his mind in a wholly different way and started towards the eldar to execute it while Alethos slammed the door shut. He took out his shotgun and aimed at the bound, gagged, and unconscious eldar. The shotgun jammed from a rolled critical failure. Reguba composed himself and immediately started slamming into the door with his hammer, and broke it down in time to see Sebrius fling the shotgun to the floor and take out his chainsword. Then the Supplicator tackled Reguba and the floor in front of the door was a tangle of Ecclesiarchy robes wrestling like a 60's movie fight scene, with Dariel trying to clamber over them to save the prisoner from the possessed Sebrius, who was being influenced by his rage against the Eldar to execute a prisoner who had valuable knowledge.
The wrestling match continued until Reguba gained control of it then tried to fling Alethos against the wall, but actually flung him into Dariel (didnt see him there, because he's a slippery little lightweight), and Sebrius cleaved the Banshee's face in half with a sword-chainsaw, spilling her blood everywhere in a mess of gore and grey matter. The Alucard-like maw laughed and began to fade, but first set all the paper in the room on fire (and ate some, because it was taunting us). We lost any intel that Alethos couldn't remember, and his memory was going to be shot from the daemonic possession. We still knew where we were going, but didn't know what we would be getting into.