Which "30 Under 30" influential figures in the video game industry worked on  a cooperative first-person shooter video game with survival horror elements?
Kim Swift: Kim Swift (born 1983) is an American video game designer best known for her work at Valve with games such as "Portal" and "Left 4 Dead". Left 4 Dead: Left 4 Dead is a cooperative first-person shooter video game with survival horror elements, developed by Valve South and published by Valve Corporation.
i don't know