That game was made by Griptonite Games for that system and was a fine ninja game for it, even though it was delayed from Sep. to Nov. in 2011, 'cause of 3DS' slow sales at that time, but for long, nobody ever knew how long the stages were or counted how many maps in each stage have before getting to the end.
People that played it their first time had thoughts about their length upon passing through one map to the next until they reached the boss in its last map. I'd guess theirs were "How much longer is this stage taking?", "Another section? I thought I was close to finishing it!", or, "When will this level end?".
Well, I'd really like to know how long their stages were and how many maps each stage has. It kinda crossed me when remembering that game. Sure, it can be tough, but I'm still certain its worth the effort to map each and every stage there.
Hope anyone's up to the challenge.