The ending of Predator (1987) shows Dutch beating the creature by trapping it under a heavy counterweight log in the jungle. The badly hurt creature triggers a device that destroys the area around it, but Dutch gets away from the blast. He is the only member of his team to survive, and a helicopter collects him and Anna the next morning.
What does it mean? In my opinion, the key beat is the moment the creature takes off its mask and weapons to fight Dutch hand to hand. It could be argued that the film is showing the Predator as a sportsman with rules, and that Dutch wins because he stops playing the soldier and starts playing the prey, with mud for armor and traps for weapons. The mud matters because the creature sees heat, so Dutch only becomes a fair target once he hides what the creature hunts by. That shift is also why the film works as a monster story and not only as a shoot out.
The staging is worth a second look. The film spends its first half as a muscle-bound action picture, with a guerrilla camp assault and a team that out-guns everything it meets, then strips Dutch of every advantage one by one until he is a mud-covered man with a spear and a log. The trap is a rig built from the jungle itself, and that is the point. The soldiers who died earlier relied on firepower against something that skins its victims and keeps their skulls, and none of that helped them.
The last act has a production story behind it. After the first creature design was dropped, Stan Winston's team rebuilt the creature, starting from a much taller performer, and the crew returned to Mexico to reshoot the third act. Kevin Peter Hall, who was over seven feet tall, wore the redesigned suit, so the bare-handed fight owes a lot to a physical performance rather than to effects. Compared with the sequels, the finish is unusually intimate. Predator 2 moves the hunt into a Los Angeles heat wave with a police lieutenant at the center, and predators 2010 drops a group of strangers onto an alien world, while this film keeps one man, one hunter and one stretch of jungle.
The closing shot leaves Dutch exhausted, with the idea of other hunters visiting Earth left open for the franchise. The film has no post credit scene, so there is no teaser beyond the helicopter ride. For the next chapter, head to predator 2, or see the order of the whole saga in predator movies in order.