The Exploiter Orb has four vents and after it fell down, they are exposed and can be destroyed. So simply use your weapon and focus your fire on one vent until it is destroyed. Now the Exploiter Orb will run through the other end of the room.

How do I kill the exploiter Orb?

After the Exploiter Orb overheats, players need to jump onto the Orb and a cutscene will follow showing the enemy's engine opening up. Players will then use their weapons and shoot at the engine and flames will burst out. Players will then keep shooting until they deal the right amount of damage.

What damage is exploiter orb weak to?

Corrosive is the top element to deal damage to the well-armored Exploiter Orb, while the Coolant Raknoids will take more damage from radiation. Last, but not least, you'll need some Diluted Thermia to start the Exploiter Orb encounter.