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 individual in the test, is tasked with monitoring Eric and Hoffman. When the 90-minute timer for Rigg's tests expires, Art can release them and himself. Eric discerns that if the door opens before time runs out, two large ice blocks will fall from the ceiling and crush his head.