An Infestation is a group of three to five missions, depending on rarity, with each mission increasing in difficulty. On the map they have a symbol of three skulls above a cluster of walkers.

Regular Infestations have a total of 3 stages, Rare Infestations have 4 stages and Epic Infestations have 5 stages.

Infestations will reward you with coins for the intermediate levels, and a pack for completing the last stage.

The pack for completing the last stage of the Infestation will include one Safehouse token, which is randomly chosen, Training, or Upgrade tokens. In addition, the final reward for clearing an entire Rare or Epic Infestation will also include a guaranteed Rare or Epic card respectively.