My friend got me two copies from Gen Con and let me begin by saying that this is an truly excellent game. The strategy you need to employ in order to prep yourself for later battles is so different from that of Star Wars LCG, or even AGOT (sorry dont play netrunner and played CoC too long ago to remember).
I think that the ability to use shield cards to mitigate damage to your units is a cool mechanic. I have built a decent Marine deck With the two core and played with Tau from a single core.
Not such a big fan of the Dark Eldar, but that is from me being on the receiving end.
Really looking forward to new releases from FFG; home run.