Gunther Mohr delivers a strong performance as

the head of a crime organisation and his role resembles Vito Corleone in some ways.
- Jason Knight, UK Film Review -

Schoonma is genuinely one of the strongest villains in Dutch cinema, despite the fact that the number of scenes with him are rather modest and there is not much focus on him. 

-Bjorn Vandermarliere , Fast Forward -

Gunther Mohr is an actor who mainly steals the show with his non-verbal acting.
- Sebastiaan Khouw, SebKijk -

The most striking figure in Betrayal is undoubtedly the maniacal villain Martin Schoonma, a cool, calculating, cunning and ruthless Dutch Nazi who hunts his Jewish victims with relentless zeal. With a rich arsenal of facial expressions, actor

Dirk Gunther Mohr manages to turn Schoonma into a truly terrifying and reprehensible subject that is occasionally reminiscent of Hans Landa from 'Inglourious Basterds'.

- Frank Heinen, Cinemagazine.nl- 

Gunther Mohr himself has managed over both parts to fully showcase not only his immense writing talent, but also incredible acting versatility, the darker parts of Vincent that were only just coming to the surface in part one are fully exposed here, and Gunther Mohr’s performance really embodies the weight of a man burdened by immense expectation and responsibility.
- Chris Buick, UK Film Review -