Hunter, who disappeared during the events of Metro 2033 and is now heavily traumatised, has been working as a border guard at Sevastopolskaya.

They detour through the abandoned and heavily irradiated Kakhovskaya Line and encounter Sasha, the teenage daughter of the exiled Avtozavodskaya Station Master, who had recently died.

An increasingly unstable Hunter heads to the centre of the Metro, to Polis, to gather an armed force to cleanse the infected stations.

Miller provides him with a heavily armed squad and Hunter returns to Dobryninskaya, while Homer wrestles with his conscience as to whether to attempt to stop him or allow the massacre to proceed.

The novel was released by Victor Gollancz as an e-book and hardback in English, translated by Andrew Bromfield, on 20 February 2014.

The book has also been published online for free on the Metro 2034 official website, where over a million visitors have read the text.

[4] Glukhovsky has turned a book into an art-project, inviting Russian electronic performer and hip-hop star Dolphin to write an original soundtrack for the novel, while artist Anton Gretchko worked on the oil-painted images gallery.