That's cool! I haven't come across that mission yet. Obviously that's the one that was datamined a while back.
Overall I'm liking the new map. The cave system is cool, though the map overall does feel a little smaller than I expected, though the caves and the verticality offset that a bit. I'm liking all the little details it has, and even just finding an enemy camp with a different layout and a couple of new buildings is refreshing after looking at the same ones over and over again for the past six months.
The new missions I've encountered on it have been cool too, but it's a bit disappointing to see that the majority of them seem to be straight-up recycled from the other maps. Literally all the same voice lines and objectives, just on this new map. Considering we've never had any duplicate missions until now, that kinda sucks (especially when the vast majority of them are just variations on "go here, hold square, hold out for three waves of enemies" as it is).
I think the new mode is ok for a quick go every now and then, but it's definitely not going to hold the same sort of attention span as the default Hunt mode does. And yeah it absolutely tanks the framerate, especially when you're trying to shoot at other human players, so that's not good.
And since overall my game didn't explode like it has done many times before with previous patches, I'm going to label this one as "the good!"