You cannot play a Heroic and a Villianous character at the same time. My wife likes to use Hastur and The Agency, but runs into problems with this. Granted it makes sense that good wouldn't help evil, but it severly cripples her deck. I use Yog and Shub and this is a heavy hitting combo against her. Sure she gets more magnifying glasses than me, but if I wound or make her characters go insane, she cant use it. One thing about the good helping evil... in some of Lovecraft's stories a good investagator would find some evil relic or manuscript and bring it back to society, which in essance helps evil by spreading the cults and the knowledge. I wonder if anyone else has issues with tthis ruling, or an advice as to how and best counter it.
You would think if this was so important, then they'd have made an 8th faction that was not a mythos base because it seems only the "good" factions can really work together without any penalties.
We play by the rules now, but think it is silly that some characters cant work together, even if it is some sort of helping out without really knowing it... like in the Lovecraft stories. Maybe instead of not entering play together, at least not commiting to the same story???