In the last few days an Amazon Games Studio support representative released an incorrect statement on Invasion mechanics. Amazon Games Studio has now corrected the information via a forum post from Developer Chardis. Their full statement can be seen below.
We wanted to clear up some misinformation on Invasions and how they relate to territory downgrades. How far you make it into an invasion does not determine how many stations will be downgraded if you fail the invasion. The number of downgrades your territory will incur if you fail are tied directly to the territory level of your settlement. The higher your territory level, the more downgrades you will incur if you fail. Successfully repelling an invasion will ensure that no upgrades are regressed.
Individually, you will be more likely to get better rewards the more you contribute to your team. So, contribute to your forts defense and make sure you’re giving the Corrupted all you’ve got! We’re keeping an eye on the tuning of Invasions and we appreciate the feedback we’ve received so far on this feature.