If you remember a particular build being incredibly overpowered (or underpowered) in 2006, the Anniversary Edition has likely addressed it. All masteries (e.g., Storm, Warfare, Spirit) received tweaks to balance damage types and skills, encouraging more diverse character builds. Modern Multiplayer
This mode uses the older DirectX 9 engine. It is included primarily for users with older hardware or specific driver incompatibilities that prevent the Enhanced version from running smoothly. Key Improvements in the Anniversary Edition Titan Quest Anniversary Edition Enhanced Vs Legacy