Lifeline is a separate game within the same world. The goal in terms of achievements is to complete a set of challenges, some of which can only be performed at higher (and harder) levels. With each level resources become more scarce. to a valley that looks very similar to the one you just left. Once you've found it (and repaired it), you and a handpicked group escape. Your goal is to find an RV in order to escape the valley. You begin by selecting a random character and finding refuge with a nearby enclave. Breakdown is a play on the main game, but this time there is no story.
