I've been playing it a bit, mostly because it's a good mode to get accolades on, but also to try and unlock a few "dark" character costumes.
I kind of like it, it's an interesting twist on wave based survival I guess, BUT playing public games is pretty awful. So many people who just don't seem to understand the need to maximise your score, and just tear around like idiots. The worst is how often you get to the mode that asks you to perform a sync kill to get the bonus. Today I was in a group where twice 3 of us had lined up behind the targets and were waiting for the focus meter to fill, and the fourth guy to turn up, only to have him jump down and do an aerial kill and spoil it. With that said, I don't know if we would have got it because it's probably impossible to do without mics on. But also it's irritating how often you can be walking behind a target waiting for your approach meter to fill or the focus meter to fill up, and someone tears in to steal the kill for 100 points.
I guess that's just the way it is with public co op modes, but I needed to vent. So yeah, anyone else played much of it, or have a better experience with it?