The survival mode's decent, but I only see it as a distraction from versus.
Plus it's so depressing...
Some maps are pretty dull (eg crane), while others are good fun (eg boathouse), planning which points to fall back to, and paniced ammo runs.
Don't really like Dead Air as versus. The finale's dull, and some stages are too long. I found Death Toll more fun. MH > DT > BH >> DA, if anyone cares.
Both new campaigns suffer from invisible walls, which can be quite frustrating as, well, they're invisible. Spending valuable seconds trying to flank a team of survivors who then make it to safety is annoying. >_<
Anyway, nice patch, but new campaigns would be even better.
Anyone found any particularly good player campaigns? Haven't had time to test them out much myself.