Talk:Axi O4/@comment-165.225.80.60-20190110110152/@comment-28861372-20190110115621

Tiers are denoting difficulty level of the mission and reward pool. That means all mission of same type and same tier have the same possible rewards...

for general missions: - Tier 1 = mercury to phobos - Tier 2 = ceres to saturn - Tier 3 = uranus to sedna

Special locations (void, dark sectors, archwing, spoilers) may have a different reward pools, and so a different tier name...

Best way to check which missions are concerned exactly is to go the mission page and check in the reward section...