In 2010, he made his debut as a writer with the autobiographical novel Kapgang,[4] which in 2014 was adapted into a feature film with the English title Speed Walking,[5][6] directed by acclaimed Danish director Niels Arden Oplev.
He directed the critically acclaimed production of Eugene O'Neill's Long Day's Journey into Night at the Royal Danish Playhouse and won the Reumert Award for Best Director in 2017.
[7] In September 2017, Kirkskov returned to the stage where he starred in a modern production of Ingmar Bergman's Scenes from a Marriage alongside Sofie Gråbøl of The Killing.
Kirkskov directed a production of Shakespeare's Hamlet at the Royal Danish Playhouse, which premiered in September 2020.
The highly-praised[10] production starred renowned Danish actor Esben Smed in the title role.