You finish it's quests?
Try searching Youtube for that question. It is kinda hard to tell you which crystals to have on and off in words.
Its really hard
Kuro is the boss in the river in aqworlds.
You can't exactly be a Guardian on AQWorlds, but you can verify on AQW that you have Guardian on the original Adventure Quest and get Guardian class in AQWorlds. :)
You finish it's quests?
Is in Mudluk village in Arcangrove just fight some Marsh lurker or Frogdrake to get it
solve the puzzle by on all the red crystals
Just simply click "Mudluk" in the aqworlds map or type /join mudluk
goto mudluk and defeat the tiger leech
Try searching Youtube for that question. It is kinda hard to tell you which crystals to have on and off in words.
Aisha's Fury in Guwio Village (/join northlands).
Nythera is in the Frozen Northlands. She's in Guwio Village if you keep going down the trail. She is the purple mage with dark blue hair in the village.
Its really hard
No, you can not be invincible in AQWorlds.
There are multiple kings in aqworlds.
You can not. AQworlds does not have a trade system.