The 'Last Stand' pack will add AI-controlled bots to the multiplayer shooter, letting you pad out servers or simply play offline for once. The bots will also star in the eponymous new mode Last Stand, where four players will face off against "waves of increasingly difficult bot enemies."
Futuremark has previously released free packs expanding the range of maps and weapons in Shattered Horizon. Both were followed by a 'free weekend' promotion on Steam with a month, so don't be too surprised if we see another soon.
Last Stand is due to blast off "before the end of the month."