Another stage on the way. A warehouse or port area where Batman's C-class villains gather. A likely name is Unknowns Of Gotham.
It will be a background with a logic similar to "Bar With No Name" but in the Gotham universe of DC Comics. The second level is going to be populated with cameos from lesser and unknown foes provided by Kimczi, again.
And a quick new look at the Ares (DC Comics) stage.
(https://i.servimg.com/u/f38/19/46/86/00/domain10.png)
So this is going to be something like Domains Of Ares. I did not take into account a strong reference, rather several such as "The Areopagus Hill" from the pre-crisis comics, "The Bastion of War & Death" from DCUO and my whimsical interpretation of the character.