Should you back Um Actually, Maximum Apocalypse Wasted Wilds, Vengeance Roll & Fight or Keystone?

About Maximum Apocalypse: Wasted Wilds, from BoardGameGeek:

Maximum Apocalypse: Wasted Wilds is the much anticipated continuation of the hit cooperative roguelike game series. It features the same compelling survival gameplay but adds two distinct campaigns with a lot of new twists around exposure to the elements and interactions with other survivors. It features five new characters, two distinct campaigns, new mechanics, and tons of new monsters and apocalypses to face. Wasted Wilds can be played as a stand-alone 1-4 player campaign, or combined with the contents of any other Maximum Apocalypse game or expansion to support up to 6 players. Survivors from Maximum Apocalypse, Kaiju Rising, Gothic Horrors and Jurassic Perils are all fully playable in this game. Plus any of the new survivors from Wasted Wilds can be played in the other Maximum Apocalypse games as well! If you're unfamiliar with Maximum Apocalypse, it is a cooperative roguelike game filled with adventure, exploration, survival and strategic choices. It was built from the ground up to be very modular and infinitely replayable. Maximum Apocalypse has inspired a Role Playing Game and spawned numerous expansions featuring everything from Bugs, C'thulhu and Kaiju. There is a vast wasteland out there to explore and Wasted Wilds has been designed as the perfect starting point! The Frozen Wilds campaign walks players through a mission by mission tutorial that will ease new players into the experience. -description from the designer