Complex sentence: He then walked fifteen meters, pulled out a pistol and shot himself in the head, after reloading the shotgun, he leaned the shotgun against his throat, and shot his throat and part of his jaw.
Split into simpler sentences: He then walked fifteen meters, pulled out a pistol and shot himself in the head. After reloading the shotgun, he leaned the shotgun against his throat, and shot his throat and part of his jaw.