As Luke, and then the Rebellion as a whole, learns, the second Death Star is fully armed and operational. Obfuscating Disability: It's designed to look not-quite finished, with massive gaps in the superstructure (and technically speaking, it isn't actually finished by the opening of Return of the Jedi).Deflector Shields: The new Death Star is protected by one, generated by a station on Endor.In canon, IG-88B made a similar attempt, but was thwarted by an astromech droid aboard the station.

Adaptational Nonsapience: In Legends, IG-88A secretly uploaded his consciousness into the Death Star's central computer, becoming the weapon in the process, and intended to use it to instigate a droid rebellion, only to fail before he could start when the Death Star was destroyed.

However, it also served another purpose which involved luring the Rebel Alliance into a battle which would annihilate them once and for all. Similar to the first Death Star, this station was designed to terrorize planets and star systems. A partially complete space station that served as the successor to the original Death Star.

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