A video battle report for you all. We chose a scenario from out of the Battle Missions expansion called Invasion. Daemons pour forth from a portal, and my boys and girls are the only thing in their way. Who will win? Text version below the video.
Text version here
I also had a game against Tyranids in First Contact... boy is that a butchery mission! Since most of my force relies on reserves to be useful being stuck out on the table is a nightmare. I lost half of my force on his first turn, then proceeded to be mulched to death by greater swarms of gribblies. Very historically accurate, I suppose, but I would need a much different force to be competitive in that mission.