It's quite possibly the hardest dungeon in the entire series, which is ironic, seeing as it's featured in what is otherwise the easiest game in the series.

It's so hard that many people probably would have never completed it if not for catnip. Myself included.

If the rumor about us getting the International version in the HD remaster is true, it should prove quite fun, seeing as in the International version they nerfed catnip by making it force the character wearing it into berserk and slow status, meaning you can't control said character, rendering it essentially useless.