It was worth a shot. What are you using to boot Emunand? I'm having no problems playing it with rxtools+pasta nightly, nor HANS (booted from rxtools) for Hans, I set all the language and region stuff to "---" or else it may fail to boot.
I've heard reinand and cakes are both decent Emunand solutions as well. But I haven't used them myself.
I wish you luck in getting it to work! I've had some games just refuse to play nice until I gave up for a while and came back to them with a fresh mind a few weeks later. Hhd is also a great game if you liked designing houses in the previous games, definitely worth the 30usd we spent on the physical copy.