Expansion number one is titled The Two Colonels, and tells the tale of Colonel Khlebnikov, as he attempts to return home to his son on New Year's Eve. This particular DLC offering is described as a new linear chapter in the Metro saga, and features "classic story-driven gameplay" set in the claustrophobic confines beneath the city of Novosibirsk. It also introduces a new weapon: the flame-thrower.
Things are a little bit different for expansion number two, Sam's Story, which arrives "early" next year. Here, the action plays out across a brand-new sandbox survival level, based on Vladivostok, and stars a US marine, Sam, who dreams of returning home to be reunited with his family. It's a journey that takes him from the Aurora to the "tsunami ravaged harbours, ruined industrial buildings, and crumbling residential districts" of Vladivostok.