Five seconds plan

Erwin stood in the middle of the dance floor doing battle with every person in sight. There was no discrimination as he attacked each an every single one of the demon in sight by sending out waves of destructive lightning blasts. There was barely a break in his attack as more and more came out from his palms in a wide covered area thus, preventing any one from making a counter.

Although at this point, it was safe to say that it was bold of Erwin to adopt this approach rather turning around and running like Nebula did which to most was the wisest thing to do in that situation against a potential dominion of demons. But Erwin was not built that way. More so, he was feeling so much rage he totally threw away every risk involved in his actions and was simply expressing his rage in the manner he knew best, cursing pain and suffering to his targets.