Tier 0:
Able to accelerate evolutionary development and travel across galaxies.
Tier 1:
Able to build worlds, use super-accurate slip-space navigation, manipulate gravitational force, create fully-sentient Ancilla, and to create life itself.
Tier 2:
Able to perform majorly accurate slip-space navigation, perform near-instantaneous communications, create small and efficient energy sources.
Tier 3:
Able to use decently efficient slip-space navigation, travel efficiently in space, perform holographic manipulation, create at least partially-sentient Ancilla, and have no outside influence.
Tier 4:
Species has limited space travel, but is able to travel great distances, given time. Slip-space travel is not yet developed or even invented.
Tier 5:
Species begins to focus on clean-energy products, occasionally uses atomic weapons.
Tier 6:
Species first begins to mass-produce products.
Tier 7:
Species has limited weaponry and environmental threats.
Tier 8:
Species begins to settle in locations suitable for their needs, and begins to develop empires. Species is able to construct moderately-sized structures.
Tier 9:
Species is mainly nomadic, living in small hunter-gatherer tribes, not yet forming empires. Species is able to create small primitive tents.
Tier 10:
Species is not able to develop any technology at all, and may roam their territory in packs or groups.
Forerunner Army 