Complex sentence: After Hobgoblin and Scorpion are defeated, Doctor Octopus finds a fragment of the Tablet of Order and Chaos and goes mad with power then builds a Condensed Matter Reactor powered by the fragment to wreak havoc and take over the world.
Split into simpler sentences: After Hobgoblin and Scorpion are defeated, Doctor Octopus finds a fragment of the Tablet of Order and Chaos and goes mad with power. She then builds a Condensed Matter Reactor powered by the fragment to wreak havoc and take over the world.