Earthrise has posted another developer question and answer on their forums!

What effect, if any will the "main storyline" have on player development within factions? In particular, will the Noir/Continoma storyline missions be different?

Once players enter the world of Earthrise and familiarize themselves with the factions that struggle for control over Enterra, they can take on storyline quest arcs that develop into an epic story taking place over majority of the expansive territory of the island. The story will be usually branched between Continoma and Noir, but many quests will have shared setups between the two factions. Still, their completion task will vary depending what faction the player is affiliated with.

For example, some quests might involve either entering a territory and protecting a settlement from attacks of nearby enemies, or killing everyone in the said territory. Almost every quest is made with such duality in mind. Even when the completion task is clearly defined to the player, they will be free to complete quests in favor of the opposing force, sacrificing many of the rewards of a quest for reputation towards the opposing faction.

Read on for the rest of the answer, and rest in easy in knowing that you won't be able to screw it up!

As we have mentioned before, players will be able to shift from one faction to the other, but such betrayals will be difficult to pull off and it won't be possible to become a turncoat every single day. Even if players are capable of doing acts in favor of the opposing faction, that faction won't immediately greet them with open arms - they would still be viewed as enemies until certain requirements are met.

Sacrificing quest rewards in favor of reputation towards the opposing side could speed up the process of warming up with the enemy; the downside is, many quests won't be repeatable so such acts of betrayal can be seen as a one-time speed-up that players would have to use sparingly, not to mention the material rewards they would be missing by doing so.

Eventually, it won't be possible to "screw up" the main storyline - despite a player's actions he would be able to reach the final chapter. We are still discussing many aspects of the storyline, so this is what we can reveal for now.