Enchantments are recommended, but by no means necessary. The Hardcore Ender Expansion Mod buffs the Ender Dragon considerably. The Ender Dragon is the first boss added to vanilla Minecraft.She lives in The End, but will also spawn in any Mystcraft Age that has a Sky biome at (0,0). And in reality, it's actually quite easy, especially for a boss fight. A full diamond armor set is almost required in an Ender dragon fight. The Ender Dragon fight has remained essentially the same since release 1.0, nearly 9 years ago. The Ender dragon is capable of dealing 5 hearts of damage and its knock back could push you off of heights, causing falling damage.
I think it should be more challenging. Killing the Ender Dragon spawns an End Portal topped with a Dragon Egg.. With Biomes O' Plenty, additional Ender Dragons can be spawned using a Sacrificial Altar.. Yes, you can respawn the Ender Dragon now, and there have indeed been changes to how the obsidian pillars are arranged, and the dragon's AI, etc. Fighting the ender dragon is as simple as playing it smart. Protection would be the best enchantment to get on all pieces, except for maybe feather falling on your boots. But essentially, it's the same.