In 2015, Christensen starred in the film 90 Minutes in Heaven co-starring Kate Bosworth and directed by Michael Polish based on the best-selling novel by the same name. In 2015, filming began of an unreleased World War II Nazi zombies horror movie titled Untöt, set to star Christensen. In 2017, he was in the film First Kill alongside Bruce Willis. In 2018 he appeared in the Canadian-American romantic comedy Little Italy with Emma Roberts and in the same year was in The Last Man.
In 2015, Christensen starred in the film 90 Minutes in Heaven co-starring Kate Bosworth and directed by Michael Polish based on the best-selling novel by the same name. In 2015, filming began of an unreleased World War II Nazi zombies horror movie titled Untöt, set to star Christensen. In 2017 he was in the film First Kill alongside Bruce Willis In 2018 he appeared in the Ca.nadian-American romantic comedy Little Italy with Emma Roberts and in the same year was in The Last Man.