The Tibia quest “The hidden city of Beregar” has no level requirement and the spoiler assured me, that it is possible to do that quest as a “careful level 40 mage”. That is complete bullshit. To find the hidden city for the first time I asked Hase for help. She was raised by dwarves and kind of lives in Beregar. She brought me safe in the city.
Behind the fire room of the Royal Rescue quest I noticed that tibiawiki was wrong. It is not possible to make it as a careful level 40 mage. I was level 85 and nearly out of mana potions. Summoning demon skeletons didn’t help at all. I continued and went to the cell, freed the son of the emperor. But now I had no potions at all. I had brown mushrooms, ate them and waited for mana. Then i ran back to the point behind the fire room. I waited for mana again. That room would kill me.
In the meantime I talked in guildchannel and explained my problem to the others. They asked Ilumo a level 170 elite knight, if he could rescue me. He came to the rescue and went yellow in that fire room. he brought me mana potions and we got out. If I would have died there I would have had to fish for three days while casting like crazy. I received dwarven legs as reward. Ilumo told me, that he was in the same situation at around my level, when he thought as well, that a level 40 can do this quest. Lesson learned: add 40 levels to what tibiawiki says.