I am level 78, the Royal Mausoleum quest map is level 84, I also heard you have to be within 10 levels to obtain the next highest level quest. I have finished all quests on the first floor, tried talking to the guardian stone on 2F and it gives me NO_DATA and a short dialogue. Does anyone happen know why it does not work? I have also finished the quest to defeat Rexipher in the Mausoleum. Is it because of this?
keep trying with all the stuff you can interact with and eventually you will get the quests order, there are 2 secret areas starting with the left and ending on the right side (second one)
Yeahh!! Thanks! I tried it out earlier and everything worked except for the first 2 guardian stones 
Dude. dude. Go back.
There are 84 lvls besides town. Check those out and clear them before going foward into mausoleum.
could you elaborate a little more…
am interested in leveling up and doing some quests :3
Simple: Go to TOSBASE and open the world map. keep an eye open for areas around your level.
The dungeons often goes on and on as you go further, raising its level, but there are open maps you’ll miss if you keep grinding for it.
The game doesnt shows you those maps, thats why keeping an eye on world map is a good thing to do to avoid losing quests rewards.
ah! yeah… the truth is I once said I was going to do that but completely forgot when game came out to test xD
thanks you, I will do that 