the movie is more of the first one, but it hits stronger since the cycle of crime, double crossings and death continues and has a deeper meaning knowing the context. this movie on its own offers a look to the past movie and past events so watching the first movie is not necessary. The characters were very brutal and charismatic, they are both monsters and humans.
but i wonder about the title "Believer". yes we have one gangster who is a believer and knows his bible so that he can quote it in certain situations but that is more of an example what it means to sin against the second commandment: Thou shalt not take the name of the Lord thy God in vain.
ultimately, is there belief and God in this movie? and what is death or justice if there is no God? I would have wanted more hints at that from the movie but i did get a lot to think about. so if you want to look into the soul of some criminals, this movie is for you.