i found it fairly easy to get S rank in obel compared to the late stages, but then again, i was way over-leveled after Obel and it seems like EXP definitely matters even though my japanese guide doesn't mention it in the S rank criteria. there could be mention of it in some introduction that explains rankings, but i can't read :/
Been years since I played.Don't recall much. I was the first to get all S Ranks and Items. I discovered how valuable Mirrors (?) are. You switch in a few very low Level characters as the battle progresses out of harms way for lots of EXP. Suggested he put it in the guide but never checked to see if he ever did. Do think the other Requirement had to do with Characters Exp gained. Don't recall the specifics of being on their Color, Attack,Defense Bonuses and possibly Exp Bonus?
World Record Holder Best Score Dynasty Tactics 2,16 Gold 99,999's Vs 10.