"Aw hell..." is exactly what you should say when you check out the Return to Planet Apocalypse Kickstarter campaign that Petersen Games is running. They've got new expansions available to add to your game as well as a new 5th Edition D&D supplement so you can not only fight these horrors as a board game, but as an RPG as well. Go have a look.
From the campaign:
Planet Apocalypse was designed by Sandy Petersen, one of the best-known designers in horror gaming. In the early eighties he wrote the Call of Cthulhu role-playing game for Chaosium. In the nineties, he was a key designer for the ground-breaking video games Doom, Doom 2, and Quake. And in 2015, he released Cthulhu Wars. Now he returns to the topic of apocalyptic horror with a game Shut Up and Sit Down described as "[having] cemented Sandy Petersen as the king of games where you roll dice and things die."
This Kickstarter offers two separate tabletop experiences:
The board game (core game reprint) with new expansions.
A 325+ role-playing book for 5th edition D&D with TONS of content to bring the apocalypse to your fantasy world, plus new adventures, monsters and more.
The campaign's more than 6x funded with 13 days left to go.