What is climate and acclimation?
There are extreme environments in the game to which you’ll need your character to become acclimated. The six climates are: Frigid, Scorching, Toxic, Anaerobic, Pressure, and Wind Shear. Each of those extreme climates have tiers associated with them corresponding to how punishing they are to the player. For example, you may be able to survive in a Tier 1 environment without any acclimation, but you would certainly experience some detrimental effects like a weapon or movement speed penalty. The higher the tier the more detrimental and severe the effects would be.