In Assassin’s Creed, the protagonist is always portrayed as a Master Assassin. His allies respect him. His enemies fear him. In the later games, he recruits new Assassins, trains them, and presides over their “graduation.” He’s clearly the leader, and he’s clearly a capable leader. But as the combat changes from game to game, so do the character traits that it implies.
The one-hit kill counter system that has been in place since the first game says a lot about the Assassins as a group, since this seems to be their default fighting style. It’s defensive in nature, emphasizing technique and technical mastery over aggressive flailing, which is to say: button timing over button mashing.