How are you guys finding the multiplayer demo so far? It's only 2 maps but I'm addicted to it already

Should keep me going until the game's release. The Firebase White map seems to be bugged though, I sometimes find myself running in the air and inbetween textures, so I have to quit the session. Very annoying if you're on the 10th wave just before extraction and you have to forfeit all that xp.
The other thing is that I always find these level 1 noobs playing the Silver and Gold challenges who are constantly dying. If it's not that then it's some knob who doesn't understand the importance of sticking together through each wave, and they run off to go kill the baddies on their own and end up dying. The one game it was just me and another level 18 guy and we cleared a Bronze challenge together, that was epic.