Noah realized that the Blessed Ones were looking at him among the imps, and he decided to do one last test for these people, to see who it would be worth to save or not.
Through the mental link he had, Noah ordered the imps to quickly try to attack him.
This was Noah's first order that the imps ever wondered whether they should obey or not, since not only by the contract and knowing that Noah was Lucifer's Descendant, and especially after seeing Noah's wings, the respect of the imps was on a level toward Noah that treated him as their absolute God.
But Noah reinforced his mental command and caused the imps to start attacking him, even though against their will.
The thirteen imps came together to try to attack Noah, but without using any skills. They were just attacking him with physical strength, sometimes making a cut on him, other times giving a very strong punch, to try to give the humans the best impression that he was in an uphill battle.