What is he Elvis? No he didn't fake his own death. Do you know nothing at all? The whole point of Jesus Christ was for God to instill himself into a human being, or his "son". Like all human beings Jesus was mortal, so thus, he could be killed. The whole point of Christianity is the sake of Jesus dying FOR everybody so that salvation could be achieved following death.
Besides, he was crucified by the Romans. They completed tens of thousands, if not hundreds of thousands of crucifixions for criminals, traitors, spies, or "enemies of the state". They were good at them; they made sure the person was dead.