We've already seen that the main guy in Far Cry Primal will be pretty chill with animals, taming and commanding them after suppressing their whole eat-the-human instinct. But lead character Takkar will have some gnarlier interactions with his fellow humans. As in "ears cut off and kept as trophies". According to the game's ESRB listing, at least some of the action in Primal will be in line with expectations:
Players use arrows, spears, and clubs to kill enemies in frenetic combat. Some sequences require stealth kills in which enemies are stabbed in the head or slashed close-up.
But there's more barbarian-style savagery in the game, too:
One cutscene depicts a character being held in a fire while screaming; another depicts Takkar tapping a hole in another character's skull as the man screams. Some scenes depict corpses in various states of mutilation: heads and torsos on spikes; ears cut off and kept as trophies; headless bodies lying in pools of blood. Certain scenes or camera angles can depict male genitalia under garments or in shadows; some female characters are depicted topless.
Far Cry games have always had characters that get in touch with their baser instincts and it stands to reason that a prehistoric spinoff would lean harder on that theme. It will be interesting to see just how feral the proceedings will get.