This one is really unique compared to the other ones in the Saint Seiya franchise.
Saint Seiya was my first anime series and Dynasty Warriors was my first video game series, so this was a real treat. Sadly, it never got released in the US, so my imported copy is a treasure of mine.
I love that every playable character had a completely unique moveset down to the normal and strong attacks. The boss battles were also incredibly fun--I loved dodging around, timing my attacks and charges, and learning their patterns...much like how you'd probably do it in the series proper. It's so satisfying.
Biggest downsides: It's the only one of its genre in the series, limits itself to the Sanctuary arc only, lacks the fun flair of the Warriors game series where they'll have unique conversations with each other.