Dungeons from Highest to lowest
People can tell Dungeon rank by the color of the core on top of the portal
Special(Black)(all rank S had to team up to beat it)
Disaster(Dark red)(Require about 5 rank S)
Rank A(Yellow)
Rank B(Blue)
Rank C(Green)
Rank D(white)
Average(no core)(For ordinary people but raider don't go to these because they don't drop crystal coin which is used to exchange cash)
Ordinary people stats are 5 and rank D raider are 50
Average dungeon monster has a average stats of 30 while rank D has 100 that's why ordinary people don't go to dungeons and took mc so long to kill 100 demons
Experience is also required if you want to solo a rank d while being rank d and demons coming out of dungeon is possible but it takes 1 month for it to happen
So you have to kill 100 average demon to get 1 attribute point and it's the same number of killing for other dungeons ranking but just higher attribute point
Rank D gives 5
Rank C gives 50
Rank B gives 300
Rank A gives 1000
Rank disaster gives 4000
Rank special gives one a blessing( like a passive skill) and 15000 attribute point