Battle Report - Grey Knights! (vs Tyranids)

So for a long time now I've been curious about the whole Tyranids vs. Grey Knights thing. The internet (hi Internet!) seems to think that my buggles are no match for the Knights in shiny satin.

So I was actually challenged by one of the regulars (We'll call him Markus Aurelius) at the LGS the week prior after months of trash talking. sadly I had to postpone until this last week. We had actually semi-battled on the table of a 2v2 match, but we had been in opposite corners, and barely had traded punches. This time was different.