The host player who runs Redfalls co-op will only progress
Redfall’s mission structure is very specific. It has levels that are in an order of magnitude, making the story even more interesting. You won’t get any grades if you host the co-op sessions. Arkanes Harvey Smith was interviewed by IGN about this. The current answer is that each speaker has made progress, and it is difficult to do so. You can beat it again if you are willing to fight harder than your friends.
Arkane made this decision because it was wrong to ignore the mission’s purpose. You will be joining the host as soon as you can if you attempt to perform the show by yourself. Even if you don’t play the stage, the cost of the show won’t be much higher from the moment you arrive. This would be confusing if you were to go to mission 8. Smith explained that if you didn’t, this would be because you had already done it.
Campaign progress will not change, but what you do with your character will. Your character’s progress is constant, even if you are a newer Smith. You must be persistent. A progression decision is important to the hosts, regardless of your cost. You might be able to get better gear in the timeframe you have, so it might be worth skipping ahead to future missions.
Redfall: When can you begin playing? It is now known when the game will be released. Bethesda claims that Starfield and it will be available in the first half year of 2019. Redfall will be available for PC, Xbox X/S, and Xbox One. Redfall is set to launch today.