In all the predator movies you see the dozens if not hundreds of skulls that the Predator has cleaned as trophies...even the original movie talked about entire villages being wiped out and the story of it ed downed...the movies show the few times that the predator loses...IMO though, except for the original - the rest seem rushed and just money grabs...the Alien franchise with there 2 prequals now..ridley scott and the team seem to put a lot more into the story telling.