Daily Mail:

Teen who was playing a zombie at Walking Dead-style attraction run down and killed by bus filled with paintballers

Jeremy T. McSpadden Jr., 18, of Spokane Valley, Washington, was a role player in the "Zombie Slayer Paintball Bus" attraction at the maze
He ran out towards the bus dressed as a zombie but tripped and fell
Appears to have been killed almost instantly
AP story at link above.