The Last Stand will include more than 20 new Survival mode maps, updated animations, restored voicelines ('It's a bitch apocalypse now, bitch' makes me think that maybe those lines were cut for a reason), new melee weapons, two new mutations, 30 new achievements, and 'a plethora of bug and exploit fixes.' A more detailed rundown of changed was posted on YouTube by development team member JAiZ, including:
