These attempts are thwarted by Art, another man in the test who is forced to watch over Eric and Hoffman. Once the 90-minute timer for Rigg's tests has run out, Art will be able to release them and himself. Eric realizes that if the door is opened ahead of time, two large ice blocks will swing down from the ceiling and crush his head.
Art, another participant in the test, is responsible for supervising Eric and Hoffman. Upon reaching the 90-minute mark for Rigg's tests, Art can set them free and himself. Eric realizes that if the door opens early, two massive ice blocks will descend from the ceiling and crush his head.