Mirror's Edge is set in a world where a totalitarian government runs a city and tries to eliminate anything that stands out, such as the free-running protagonist. The levels are created minimalistic, mostly white with aggressively contrasting primary colors, to represent the oppressive nature...
The soundtrack's spacious ambient texture coupled with electronic beats and synthetic sounds supplement the game's otherworldly, contrasting setting. The complete soundtrack is available with the purchase of the game.
The game's core mechanic is about traversing levels using wall-jumps, rolls and slides without losing momentum. It does a great job of creating a fluid sense of motion that you have complete control over.
There are blueprints found throughout the gameworld that can be used to modify existing weapons in a wide variety of ways by adding various elements to them and creating weapons such as enemy seeking grenades, exploding throwing stars, and makeshift bats with nails through them.
Assassin's Creed Unity has finally added in a method for players to crouch-walk. Allowing them to remain hidden going from cover to cover. This was an often asked for mechanic and is now finally implemented into the game series.