Well, if the title doesn't enlighten you as to the appalling nature of this film, allow me to try. SS Doomtrooper is a massive blue monster who is created by some evil Nazi scientists. Somehow. A normal guy goes into a curious looking chamber and comes out as SS DOOMTROOPER! As far-fetched as turning a normal man into a 18 foot blue monster with lightning coursing through his biceps sounds, what really takes the biscuit is the fact that he has somehow managed to generate armour and a ridiculously over-sized cannon.
The bit that confused me was that if the Nazis were capable of creating such a powerful weapon, they would have won the war anyway, without the need for a creature that can take a tank shell to the chest point blank and carry on moving.
Go and see it!