Visceral Games spoke about four unlockable modes in the game, which are available when you beat the game once.
Producer Steve Papoutsis from Visceral Games said there will be new DLC modes after the games' release along with a “top secret additional story”. More information on the secret additional story “will be coming in a few weeks”.
He also announced four unlockable game modes which become available once you have beaten the game. "New Game" allows you to start new game with all upgrades and the arsenal, that you have earned. "Classic Mode" contains zero crafting, is single-player only and all weapons have to be built from blueprints found in the game. In "Pure Survival Mode" enemies will only drop resources – no ammo, health, or weapon parts. "Hardcore Mode" gives the player only one life for the entire campaign.
Check out some artworks and the story trailer here.
