wait for the intro to finish. a and d to move, w to jump and space to swing your sword. dodge the wither skulls(you can swing your sword at it to make them disappear) dodge the falling blocks. go to the very left if a beam comes. if the wither comes closer it will hit the ground (best to jump) and avowed the white thing and that is the only time you can hit the wither.
Hardest. Boss. Ever.
