I don’t often complain about difficulty but I just had a CW mission that felt like I was trying to swim up a waterfall. I was going through the cinder peak map and the mutators were khorne’s skull curse, -roaming enemies and +hordes. I had a pretty OP build at the time too. Blessed shots consume no ammo, +reset blessed shots on kill +crits chain lightning, +50% health, +health regen, red duckfoot pistols that return ammo on headshots, the works basically. Any BH players reading this would understand how powerful that combo is.
And EVEN THEN I was struggling. I only got about 3/4 through the map before we all died and all I saw in that time was 100% beastmen. The hordes were spawning so fast that new hordes would spawn in before we could completely kill off the old hordes, and not only that but each horde had two banner bearers AND two chaos warriors mixed in. Deaths usually happened because there were so many beastmen pouring in from all directions that we simply couldn’t move.
It seems that the increase in hordes from the skull curse and the +hordes mutator from the map stack with each other. Either one of them is multiplying the speed of the other, or they are on two separate timers that can fire off at the same time. I think this should be toned down because it creates a difficulty spike that is well beyond anything you should see in legend. I’ve seen videos of cata onslaught games with less spawns than that.