Armin is burned to a cinder, but he buys enough time for Eren Yeager to leave a hardened Titan shell behind and approach Bertholdt in human form.
Eren slices Bertholdt out of his nape, successfully ending the threat of the Colossal Titan.
While the Beast Titan rains boulders upon the remaining Survey Corps, leads the new recruits in a desperate suicide charge to distract the enemy. Amidst the chaos, Levi uses the line of Titans as anchors for his ODM gear, closing the distance undetected. Levi vs. Zeke
In the smoking ruins of Shiganshina, (or Episode 54 overall), titled "Hero," depicts the high-stakes climax of the battle to retake Wall Maria. This episode is widely celebrated as one of the most intense and emotional in the entire series, featuring the legendary confrontation between Levi Ackerman and the Beast Titan . The Suicide Charge
Shingeki no Kyojin Season 3 - Episode 54 discussion : r/anime