The western european releases of Risen (standard and collectors edition) are multilingual. You can chose between German, English and French language. Italian and Spanish only with subtitles.

Only the standard UK version is English only.

An English collectors edition doesn't exist to my knowledge.

The Risen game manual of the German collectors edition is written in German of cause.

You can download the english manual legally on steam:

http://store.steampowered.com/app/40300/

-> click on view the manual