Djinn is Do-Tar's guardian, the sub-boss of the final areas, who appears at the end of The Great Ark.Crully is the god of hate at the top of the Spire Of Eternity. The game is definately beatable once you work the flaws to your advantage (killing the bat-things in the Tower Of Souls using Rumi's edge-of-screen-knife-flaw comes to mind...those things are a pain otherwise).
Adding PCE console specific layer on top of that, makes for an interesting challenge (no, not a reference to Ys II).