All fetters break before this event, allowing Fenrir and Jormundgand to kill Odin and Thor, while pretty much everything else in the universe is destroyed.
It is preceded by three consecutive winters, and begins with the crowing of the golden cock Gullinkambi, as well as Hati and Skoll devouring the moon and the sun. Occurring on the plain of Vigrid, it ends with Surt (*) setting all the worlds on fire. During it, Vidar avenges his father's death, and Tyr slays Garm, the guardian of Hel, before dying of his wounds. All fetters break before this event, allowing Fenrir and Jormundgand to kill Odin and Thor, while pretty much everything else in the universe is destroyed. FTP, name this climactic battle at the end of the world from Norse mythology.
It is preceded by three consecutive winters, and begins with the crowing of the golden cock Gullinkambi, as well as Hati and Skoll devouring the moon and the sun.
{Ragnarok}