Power Armor is an equippable item to defend against damage.

Power Armor

A Small Blue Alien does 3 damage on Medium Difficulty with no armor, but does 1 damage on Medium Difficulty with the armor turned on.

Power Armor will slowly drain energy whilst equipped.

Large Blue Alien Corpses can be used to upgrade Power Armor into Enhanced Power Armor, which is more effective at mitigating incoming damage.

Blue Alien Corpse

Hint box that appears when picking up your first Blue Alien Corpse.

Enhanced Power Armor

Power Armor combined with a Blue Alien Corpse.