Hello my fellow GMs. My group is slowly climing the level latter, and ive been writing up more difficult missions. This one i will need some input from any who would be kind enough to help out. First some back story. This investigation involves a Rogue Trader by the name of Darius Solanus, and his vessel The Aurum Regina. Darius has had contact with their Inquisitor, Augustus Pike, (Darius himself not knowing that he is an inquisitor), and has had a business venture with him for a while now. Pike has been paying him to bring back any xenos tech, or specimens that he can find. Darius has been gone for over a Dregan year now (I made a custom system the Dregan System where the accolytes and Pike reside on Drega III). Darius's vessel (a modified Firestorm-class Naval Frigate) comes into the Dregan System out of warp transit. The issue is that Darius's vessel has gone dark, and there is no response. The mission as stated by the title essentialy is to send the accolytes into the vessel, and investigate what happened on the vessel. Most of the crew will be dead, and there are a few key characters that will be dead that the accolytes can search for. They will be boading The Aurum Regina via Pike's ship The Torrens Solium. The hook of the story I havent decided on yet. The reason for the ship going dark, and most of the crew being dead will be attributed to one of several xenos foe. My friend who is also a gm and one of my players statted out Xenomorphs (aka the Aliens from the Alien movie franchise) and i was considering using them, a large group of Genestealers that Darius was transporting to Pike, or that got onto the ship somehow, and finaly I have been statting out the Akrid from The Lost Planet vid game series. The reason for the two non 40k races is because my group wouldnt expect it, and I was planning on in the long run their final rank 8 mission would be to E.D.N. III which would be a lost human planet, and just so happens to be the home of the Akrid. I need some help primarily on several subjects.

-Knowing my group they probably will go poking around to try and "rescue" some equipment if anything what kind of equipment should i throw in there to award their bravery or stupidity as they search around the ship.

-One of their primary objectives will be to find the ship's logs, and also to obtain any of Mechanicum Explorator Tychus Azmar's personal logs to find out what happened on the ship, and to see if he has any new info on Xenos/Tech. What other objectives should i give them.

-Depending on the race how many of the crew should still be alive by the time the accolytes arrive on the vessel.

-With the vessel have been in a state of danger and combat what systems should be out (power primarily being a big one).

Thanks to anyone who reads, Cheers!