Complex sentence: Sultsam activates the self-destruct sequence in his lab. The Bat-Man barges in the lab, lets Julia go and attacks Sultsam, as the lab crumbles, Sultsam accidentally electrocutes himself and dies.
Split into simpler sentences: Sultsam activates the self-destruct sequence in his lab. The Bat-Man barges in the lab, lets Julia go and attacks Sultsam. As the lab crumbles, Sultsam accidentally electrocutes himself and dies.