"Indeed they do. Every enemy's appearance, weaponry, AI and speech will be relevant to whatever kind of game they were originally from and, as a general rule, enemies take more damage from their own weapons. For example, the Soakem (SOCOM, geddit?) Commandos from some non-violent water gun game take a lot of damage from bullets, but hose them down with a pump-action water rifle and they last a matter of seconds. They also say things like, "I'm down to my last squirt!" instead of, "I need ammo!" That sounds very silly. It is."