Quoted from Crile1:
Co-OP could use some polish. I think lit secret passage and mystery scoop should carry over from player to player. Sounds like Billion Dollar Babies should continue through until each player has had a chance or at least through player 4 (or the last player). But this is polish that will probably be way down the line. Base code needs to be finish, debugged, and polished first, then co-op.
Some features in TNA co-op are held by players while others are global. The best example of this is SAVE light state. If I lit two drain saves, I want to keep them for myself
So we made similar decisions for ACNC co-op. Chop progress is cumulative because it can apply to everyone, but if I lit the secret passage, I want to be able to claim it
So, maybe not the best decision? But it's a deliberate decision.