I just learned cry of the night in the infinito. That mastered my gun mage and I'm thrilled about that. I got a list of 4 more monsters I need to over soul for the end GG. Which by now I am not sweating. Sad thing is I'm going to start a new game plus once again after I get my second Iron Duke and the 4 oversouls. That way I got 3 iron dukes and 3 key to success. My life will be one more step to complete.