Complex sentence: However, Batman activates all of the Hell Spores and threatens to destroy Apokolips, issuing Darkseid an ultimatum: free Kara and promise to leave her alone in exchange for deactivating the Spores.
Split into simpler sentences: However, Batman activates all of the Hell Spores and threatens to destroy Apokolips. He then issues Darkseid an ultimatum: free Kara and promise to leave her alone and in exchange for deactivating the Spores.