While The Callisto Protocol has some of the most terrifying foes for players to deal with, they fail compared to the Security Robot. RELATED: How to Farm Credits in The Callisto Protocol ...

The Security Robot that you face in Chapter 3: Aftermath is one of the strongest and most resilient enemies you face in Callisto Protocol. All your weapons fall flat in front of the metal behemoth.

Killing a security robot and further destroying it will drop items for players to trade in. Simply salvage these parts and bring them to a Reforge Station to obtain Callisto Credits.