Startship Troopers 3 is a very baaaaad movie. In fact, one of the worst I have ever seen. I enjoyed the first one but this sequel is just terrible.
The actors are just ridiculous, the dialogs awful and the special effects very poor. Having the actor from the first one (Rico) helped a little to watch this movie (not that he is a good actor).
A singing chief of the armies, kamikaze bugs, hanging of peace protestants and many more. Just a few examples of the absurdities of this movie.
The worst thing in that movie is the constant and absurd religious comments and references. The mix of those references with the obscenities, violence and naked scene is a very questionable choice in my opinion (not that I didn't enjoyed the naked scenes).
At best that movies is entertaining but it can easily become really boring.