The Survival Kit is a premium add-on package for The Last Stand: Union City. It contains new weapons, outfits, a new area, extra storage, and new gameplay modes. The new items are added to the player's storage upon acquisition of the kit.
Originally it could be purchased with an Armor Games account through PayPal for as little as 0.01 USD (1 cent). As of August 1, 2016, it is free and automatically available to all players on Armor Games.