Complex sentence: The film is written by Alexandra Aja, Grégory Levasseur, and the director, Khalfoun; the three have worked on other genre films as well, including the 2006 remake "The Hills Have Eyes".
Split into simpler sentences: The film is written by Alexandra Aja, Grégory Levasseur, and the director, Khalfoun. Aja and Levasseur have worked on other genre films as well, including the 2006 remake "The Hills Have Eyes".