Love Riz Ahmed's performance in this. You really do end up rooting for him. The film is stylish and atmospheric. No idea about the sound problems that others report. Didn't find those at all. What I did find was two storylines (an historic one, told through flashback, and a contemporary one) that didn't quite add up. And quite a lot is asked of the viewer. You have to fill in the gaps, and at times they are a little too big. As a consequence the storyline becomes a little disjointed.