So, I've been thinking of a kill-team mission and this is the basics, so far.
A raiding Dark Eldar party has been located in the sector. They have already raided several small space ports and/or settlements. After the initial reports however, they were untracable until a few weeks ago. They popped back up on the radar and have been located in "insert name here" and appear to be preparing a raid on "insert name here". The mission is simple, locate "insert name here", eliminate the threat. However, there will be additional objectives as well. Keep as much of the Space Port and/or settlement intact as possible, and recover the Archaon alive so that the Ordo Xenos may extract additional information. There will be additional XP earned depending on how much of the Space Port is left intact and a substantial amount of bonus XP earned if they are able to capture the Arhaon and bring him back to the Ordo Xenos alive for interigation. This will be my first mission, and I hope it turns out to be a solid one.