Simplify the following text for a Grade 13 native English-speaking person.
Original: The Undertaker then retaliated giving a Kane a Chokeslam of his own and executing his deadly finisher Tombstone piledriver into a successful pinfall , thus winning the match and remaining undefeated at WrestleMania with a 12-0 record .
Simplified: The Undertaker then retaliated by Chokeslamming Kane and executing a Tombstone piledriver into a successful pinfall , thus winning the match and remaining undefeated at WrestleMania with a 12-0 record .