Complex sentence: Nick runs next door and discovers Eddie, when he returns he finds Tina gone, meanwhile Jason encounters Amanda and Crews and kills Amanda, Crews comes across Tina who runs off alone to find Amanda as Jason attacks Crews and kills him with a branch saw.
Split into simpler sentences: Nick runs next door and discovers Eddie, and when he returns he finds Tina gone. A little later, Crews comes across Tina who runs off alone to find Amanda as Jason attacks and kills Crews with a branch saw.