Youtube already has walthroughs of Ultimate Cosmos' story mode:
Here it's the start of Seiya
On a side note I like Furuya's performance more in Omega than in the original series. Furuya always gave kind of a formal Seiya which I don't think fitted with the character considering Seiya is kind of an idiot hero at first. I think this is why I preferred Morita's role in the Hades OVAs since he yelled more often (ironically I didn't like much of the Meikaihen and Elysium OVAs due to its poor animation compared with Sanctuary). Now in Omega, Seiya is a calm and collected person which makes Furuya a good think. That's just my opinion though.