Diablo 2 Diablo Guide
List of Stats and the highest rune Diablo can drop based on difficulty.
Chart of Diablo's Weaknesses to Cold, Fire, Poison, Light, Magical and Physical Damage Types.
Diablo 2 Diablo Drops
Below is a list of the Weapon and Armor items that will likely drop from Diablo, based on Normal, Nightmare, and Hell Difficulty. For example, you have a high chance that Halaberd's Reign will drop from Diablo (Hell Difficulty).