Nether includes content that the community requested through feedback and voting. Players want a subterranean tunnel system to explore? Done: Say hello to the new Subway System. How about a way to get from rooftop to rooftop? Check. Players can use new wing gliders to sail between elevated points.
Additional features in this update include a new large golem enemy, a Surge objective (where killing a mini-boss in random parts of the city grants an experience boost), and helpful survival items like a flashlight, a compass, road flares, and smoke grenades.
[Source: Phosphor Games press release]