As a result of this release shift, Atomic will be dropping a new mode, dubbed hardcore, into the game. The mode is being described as something Atomic created as some sort of military training aid, and will be one among a couple of new features the studio has been "thinking of adding to the title" before this news broke.

“While work on Breach is actually done, we did miss our small window with Microsoft to get it up on Xbox Live Arcade for Xbox 360 in late June as we had planned," Atomic president Peter Tamte said in a statement. "Luckily, there were features we had been thinking of adding to the title, and now we have the opportunity to do just that. Unlike with Six Days in Fallujah, which was delayed indefinitely when Konami pulled out, we are publishing Breach ourselves, and it will be out in January," he continued.
Breach is a military first-person shooter game with a multiplayer focus. Its big twist is its destruction engine, which allows users to destroy cover and blast out even lone bricks on the sides of buildings. From what I've seen of the game, it looked good. I didn't have issues with the controls like others, but I did take a critical note on the cover system. When a person enters cover, the camera detaches and hovers in 3rd-person, gifting the user with relatively cozy total battlefield awareness. This kind of stuff never bodes well for a sim, especially one so purely focused on its multiplayer.