Zoro has achieved a lot, but these moments are the most notable.
Roronoa Zoro/Abilities and Powers, One Piece Wiki
Biggest Achievements of Trafalgar Law
One Piece Gets Special Video For Zoro vs King Final Fight - Anime Corner
Zoro's Best Finishers
Best Zoro Moments One Piece
Luffy's sword and spear: Zoro and Sanji. : r/OnePiece
One Piece's Zoro beats Sanji, Law & Kid to rise as the strongest character, and with good reason
My One Piece Experience: Brick by Boring Brick, by JaeCreative, AniTAY-Official
One Piece: Zoro Best Swords
Did One Piece 1073 hint at Zoro being Yonko level already?