Complex sentence: Bates takes over Alyssa's body and kicks Stephanie, picking up the Amulet Alyssa goes on the balcony to see a dead Aunt Katherine, then Stephanie appears and stabs Alyssa.
Split into simpler sentences: Bates takes over Alyssa's body and kicks Stephanie. Picking up the Amulet, Alyssa goes on the balcony to see a dead Aunt Katherine, then Stephanie appears and stabs Alyssa.