DLC

Bloody Walls: Hardcore

Indie

About this game

This add-on does have NPC's, "find an item" tasks and inventory management. All you have are some bottles of antidote and some entry-level weapon sets you can choose from.

The world was plunged into chaos following an accident at a bio-weapon research facility. 100% of the earth's population has been infected. There is an antidote that blocks infection from the airborne strain of the virus, but the effect is temporary.