You can buy the original Diablo on GOG.com, which includes the Hellfire expansion. This version is optimized for Windows 10 and 11.
If you already own a CD key, you can download the installers for Diablo II and the Lord of Destruction expansion directly from Blizzard's website under the "Classic Games" section. diablo-1-and-2-pc-game-free-download-hienzo-com
Use doorways to funnel enemies so you only fight one at a time. You can buy the original Diablo on GOG
Use DevilutionX . This is an open-source source port that fixes bugs and adds quality-of-life features like widescreen support and improved controller compatibility. diablo-1-and-2-pc-game-free-download-hienzo-com
Run the in Act 1 to farm runes for early powerful "Runewords" like Stealth . Recommended Mods for Enhancing the Experience