Spear of Destiny

As you can see from the cover photo this was billed as a Wlofenstein 3D Adventure and was released some 4 months after that game. It was the prequel/sequel? and the player is the same spy who is required to kill lots of Nazi's.

Walkthru here:

http://www.gamefaqs.com/pc/564605-spear-of-destiny/faqs