Played the PSX version of this classic RPG a bit, don't think I ever got very far.
Tried to play this on the otherwise great pSX emulator, but the frame rate is very unstable, and the sound is choppy, not the best experience.
My Warrior died fighting against a Skeleton King in Leoric's Tomb. The game gave me the option of reloading a save or quitting entirely, no respawning. So saving is important.
I figured out the best way to emulate PSX Diablo. I'm using ePSXe 1.9.0, with GPU plugin 'P.E.Op.S. Soft GPU (Windows)' and sound plugin 'P.E.Op.S. DSound PSX SPU' (in SPU async mode). The game now runs fast and smooth, and with no graphical glitches.