Lutz's big break came when he played Emmett Cullen in the film adaptations of the Twilight (2008) saga by Stephenie Meyer and reprised his role for the sequel, The Twilight Saga: New Moon (2009). He also appeared as George Evans in the 90210 spinoff (2009) on The CW. Lutz also appeared the 2010 remake A Nightmare on Elm Street as Dean, "a well-liked, well-off high school jock", in April 2010. He reprised his role as Emmett Cullen in the third installment of the Twilight saga, The Twilight Saga: Eclipse (2010). He appeared as the feisty Poseidon, God of the Sea in Immortals (2011). Lutz reunited with his Twilight co-star and close friend, Ashley Greene, in the film A Warrior's Heart (2011). He was considered for the lead role in Conan the Barbarian (2011), but eventually lost out to Jason Momoa. He also reunited with his Immortals co-star Mickey Rourke in the action film Java Heat (2013), which was shot in Indonesia. In 2012, Lutz was one of the candidates for the lead role in the film Hansel and Gretel: Witch Hunters, a role that ultimately went to Jeremy Renner. Lutz starred in the epic The Legend of Hercules (2014), but the film was a critical and commercial failure.