The RPG elements are few and far between but they do a good job of keeping things fresh by introducing new combat mechanics, moves and perks throughout the experience. (metacritic.com)
For now, we know it's described as a «visceral, hardcore RPG with innovative new combat mechanics». (gamewatcher.com)
That said, there are a few new combat mechanics that make Gears 4 feel fresh. (tomsguide.com)