Complex sentence: After defeating another slime-covered Piranha Plant and a sunken statue rises from the ground, they see Shadow Mario on top of the statue for the first time who jumps off the statue, grabs Peach, and runs off with her.
Split into simpler sentences: After defeating another slime-covered Piranha Plant and a sunken statue rises from the ground, they see Shadow Mario on top of the statue for the first time. He jumps off the statue, grabs Peach, and runs off with her.