First time I battled the dragon, it was a great experience but I never felt like doing it again. The lack of proper challenge made the battle dull, and so I created the Hardcore Enderdragon mod way back in March 2012.
After some time, the mod has expanded from the dragon battle to the whole End dimension, and I felt like the name needed to change too. Welcome to Hardcore Ender Expansion!
The End has been redefined
Hardcore Ender Expansion offers unique, new content across the End. The dragon became a truly challenging boss with a great reward, but the adventure doesn't end there. The End is no longer just an island. Go investigate unique ores, battle new mobs, travel to new biomes, the death awaits you! ... I mean, adventure. Adventure awaits you.
To get familiar with the mod, use the Ender Compendium, which is a source of information about every feature of the mod! By exploring new blocks, items and mobs, you gain points which you can use to unlock information about these objects. You can open the Ender Compendium using the 'P' key by default.
Another important part of the mod are achievements, which will guide you through the main features.
The mod also has its own website: http://hee.chylex.com