What is "hellsinki"

Hellsinki is a 2009 Finnish film directed by Aleksi Mäkelä. The film is based on the novel Rööperi – rikoksen vuodet 1955–2005 by Harri Nykänen and Tom Sjöberg. Hellsinki follows the journey of two criminals, Tomppa and Krisu, in Punavuori (in slang Rööperi), a neighbourhood in Helsinki, from the mid-1960s to the late 1970s.