Have the highest degree of difficulty, most 【Heroes】 and 【Great Heroes】 would be annihilated on the first floor if they challenged one. According to the small amount of information left behind, only five of these exist in the world, and it looks like the small fry in them are basically the same level as Wyverns. Also, because they’re small fry, there’s a considerable number of them.
The rank that comes before that in terms of difficulty. Although it’s difficult, these dungeons appear to be something that 【Heroes】 and 【Great Heroes】 are somehow able to delve into. Having said that, it seems they're often killed by the floor bosses, so they can't let down their guard in them.
It is the easiest rank of 【Age of the Gods Dungeons】If they're extremely cautious, it looks like ordinary people are somehow capable of descending into these. However, the amount of risk that 【Derived Dungeons】 carry is still incomparable to the 【Demigod Rank】.