Ten Commandments vs. Four Archangels

Ten Commandments vs. Four Archangels is a battle fought between the Ten Commandments and the Four Archangels.

Prologue
Ludoshel and Nerobasta are seen speaking to Elizabeth about the plan to eliminate the Demon Clan. Elizabeth, outraged at Ludoshel's behavior, flies away towards the Fairy King's Forest. Meanwhile, Gerharde confesses to Gloxina that Ludoshel intends to lure the demons to the Archangels by use of "live bait". This plan evidently works, as the Ten Commandments arrive shortly afterwards, leading an army of demons. Meliodas and Elizabeth hurry to intercept them. Elizabeth attempts to negotiate a peace agreement with Derieri, but refuses when she asks her to bring Meliodas to her. Ludoshel's giant Ark is revealed, imprisoning tens of thousands of demons. Derieri believes Elizabeth was merely trying to keep them occupied as Ludoshel was completing his preparations. Ludoshel disintegrates every one of the demons in the Ark, provoking Derieri into attacking Elizabeth. Tarmiel and Sariel appear and the battle begins.

Battle
Both archangels use the Omega Ark technique, destroying most of the demon army the Commandments had brought with them. Tarmiel believes that the entire Ten Commandments was destroyed, but Sariel corrects him, claiming there are still two alive. Monspeet appears behind the two with Derieri clinging onto him, along with Fraudrin beside him, and tells them there are actually five. Monspeet uses Purgatory Flame Bird on the archangels. Derieri utilizes Combo Star to attack Tarmiel, while Sariel emerges from Monspeet's attack completely unscathed. Tarmiel regenerates after being hit 54 times by Derieri's Combo Star, only to be cut in half by Galan's Critical Strike. He heals himself, apparently unharmed and amused by Galan's fruitless attempt. Sariel cuts Monspeet's arm, expressing a desire to toy with Monspeet until he died. Fraudrin interrupts, striking Sariel and telling Monspeet to leave the rest to him. Sariel wounds Fraudrin's hand, commenting on his earlier claim that he was going to finish the battle in 5 minutes. Ludoshel heads for the battlefield himself. Tarmiel attacks the Ten Commandments, but all three of his heads are pierced through by Monspeet's attack. Sariel cuts Monspeet into pieces before he is confronted by Derieri, who attempts to punch him but is stopped by a wind-like sphere he has placed around himself, which shreds her arm. Despite this, she punches him in the eye, causing it to bleed. Galan attacks him from behind, but is pierced through several times by Ludoshel after he defeats Fraudrin. Both Monspeet and Derieri attempt to attack him, the former with dark bolts and the latter with a punch, but Ludoshel pierces a hole through both of them. Monspeet and Derieri realize they cannot win this way and offer six of their hearts as sacrifice in order to become Indura. Ludoshel and the two Indura exchange attacks before he calls to Tarmiel and Sariel for assistance. They attempt to help, but are pinned down and attacked viciously by Monspeet. Ludoshel is hit by Derieri, and his attempt to fight back is ineffective. Ludoshel was disbelieving that he and the other Archangels were being defeated, but before he could react, Elizabeth appeared.

Aftermath
Elizabeth uses Let There Be Light on the Indura in an attempt to purify and save them. Ludoshel demands that she stops at once, but she refuses. He orders Tarmiel and Sariel to destroy the Ten Commandments along with Meliodas, but they instead joined Elizabeth in cleansing the demons. They succeed in stopping the Indura.