This actually looks really fun. Which would explain why it's up there with I MAED A GAM3 W1TH Z0MB1ES!!!1 as the top-rated indie game on Xbox Live.
On top of the wall-jumping, hook-shotting arena shooter trappings (and vehicles), there's deep character customization, co-op map-making (and destruction), and an Infection game mode where a tentacled zombie player has to convert others to his zombie religion. I'd be an easy sell. You get tentacles.
Murder Miners was green lit on Steam so it'll end up there soon. Could be some good fun with friends.