There are a few changes in the German version:
- There are no cut off limbs
- Enemies don't leave blood splatters at the walls when shooting them.
- Killed enemies disappear almost instantly
- In the "Hell" level, the quotation "Arbeit macht frei" (a reference to concentration camps) was replaced with a combination of the palindromes "Abracadabra" and the Sator Sqare.
A detailed list of changes can be found on schnittberichte.com