That was the game telling you that you are in an area you are not supposed to be in yet. You robbed yourself of the joy of getting gud
No he is exactly where he was supposed to be giving up and uninstalling a game clearly beyond his skill. Probably was stuck in a starting area to entry level mobs.
He will never experience pre nerf Promised Consort Radahn. Let him play his maple story or w/e in peace.