I beat the Ender Dragon, by using a Bow (Power III), Cobblestone, My Sibling, Ladders, and a Diamond Sword (Sharpness III Unbreaking I), then I used the EXP to enchant a Diamond Sword (Unbreaking II) I got from a villager with Sharpness V. All in Survival Mode, of course I did change it to Peaceful when I fought the Ender Dragon XD To get rid of the Endermen.