1x Very Easy: (level 1-20)
Coach Li

3x Easy: (level 20-40)
The Alchemist's Ingredients | Deliver The Murderer's Drugs
The Stolen Army Token

5x Average: (level 40-60)
Reclaim Royal Treasures | The Heresy Snakeman
Joy's Mission | Rat Fangs | The Windbell

6x Hard: (level 60-80)
Peace Jade | Save the Villagers | Stone Spirit | Moon Spring
Moon Gem | Moon Box

3x Very Hard: (level 80-100)
Snake Islands | Ancient Devil | Meteor Tear

1x Extremely Hard: (level 100-120)
Dis City

5x Legendary: (levels 120+)
Treasure Labyrinth | Sky Pass | Demon Exterminators | First Rebirth
Second Rebirth

2x Special: (any level)
One Good Turn | Monster Hunter | Weekly and Monthly PK War