Secret Bases

Secret Bases are the final areas of a series of missions. Usually indoors, these locations are sometimes used for Duos.

Includes

 * Gotham City Sewers
 * MSCU Precinct Interior
 * Meta Research Wing
 * Metro Station Building
 * Special Crimes Unit
 * East End Regal Hotel
 * The Greenhouse
 * Ellsworth Memorial Hospital
 * Monarch Playing Card
 * Metropolis City Hall
 * University Warehouse
 * OMAC Base
 * Lair of the Spectre
 * T.O. Morrow's Hideout
 * Ace Chemicals

Lex's Storyline

 * Gotham University - Power Girl, assist by Parasite
 * Gorilla Grodd's Lab - Two Flashes, assist by Gorilla Grodd

Joker's Storyline

 * Gotham Warehouse - Huntress, assist by Catwoman
 * Distribution Center - Bane's Lieutenant, assist by Killer Croc
 * Carmine Lighthouse - Bane, assist by Killer Croc
 * Joker's Funhouse - Robin, appearance by Harley Quinn