If you encounter the "AwaitingFirstOsiConnection" error on the Ubisoft version, you may need to use a hex editor like HxD to modify the AssassinsCreedIIGame.exe file, specifically replacing certain byte values at address 772D55 to bypass the hang. 2. Sharpen the Blades (Essential Patches)
This is the most critical update. It fixes draw distance, adds shadow improvements, and repairs broken cloth physics. assassin-s-creed-2-installation-tutorial
Ensure your PC meets the basic needs (minimum 1.8 GHz Intel Core 2 Duo and 2 GB RAM). adds shadow improvements
Purchase and install the game through your preferred client. assassin-s-creed-2-installation-tutorial
This mod provides a massive boost to textures and presets.