To break Ghostrunner down to its most basic components, it is pretty much Mirrors Edge with a bit of Dishonored flair thrown in. Set in a cyberpunk future where humanity has faced a cataclysmic event that has rendered the outside world toxic, humans have retreated to a gargantuan tower to survive.
You play as Jack; a lab-grown cyborg referred to as a Ghostrunner who is tasked with carving your way up from the bottom of the tower to reach Mara, who serves as the antagonist of the game, and to free the residents of the tower from her tyranny.
Source: N4G PC Ghostrunner Review | The Outerhaven