The new combo system in DMC 4 applies letter grades as you rank up points. Each letter stands for something violent, such as D for Deadly, C for Carnage or B for Brutal.
Antone who has played Devil May Cry before knows will fell right at home with the latest iteration, even though Dante isn't the main character. There are still door barriers that are broken once you've defeated nearby enemies, psychotic marionettes are everywhere, and bosses still make grand entrances. There are plenty of new additions being added as well.