1. Olaf in Lith Harbor - A Lesson on Job Advancement
2. Olaf in Lith Harbor - The Path of Pirate
3. Kyrin in Nautilus - Finding Murat
4. Murat in Nautilus - Rigorous Training 1
5. Murat in Nautilus - Rigorous Training 2
6. Kyrin in Nautilus - Reporting the Training Results to Kyrin
7. Kyrin in Nautilus - Dirty Treasure Map
8. Betty in Ellinia - The Mystery of the Green Potion
9. Grendel the Really Old in Ellinia - Grendel the Really Tipsy
10. Blackbull in Perion – You Can’t Teach an Old Dog New Tricks
11. Blackbull in Perion - The Mystery of the Red Potion
12. Blackbull in Perion - Something’s Lacking
13. Ayan in Perion - Calming the Soul with Music
14. Ayan in Perion - To Kerning City
15. Dark Lord in Kerning City - The Mystery of the White Potion
16. Dark Lord in Kerning City - The Completed Treasure Map
17. Chief Stan in Henesys – Searching for the Treasures
Use Regular Attacks to hit the bird
18. Chief Stan in Henesys - Where are the Treasures?
19. Kyrin in Nautilus - There are no treasures?!
20. Kyrin in Nautilus - Searching for the demon
21. Kyrin in Nautilus – Treasure, and Crocell the Demon
22. Kyrin in Nautilus - After defeating Crocell, receive the Crocell Hat from Kyrin
The Hat requires lv 18 to wear it
I used gun to defeat Crocell at lv 17. It took me 2-3 minutes to defeat him. Looking back, perhaps you can defeat Crocell at lower level but it will take a longer time and use much more mana.
This quest is no longer available when you reached lv 40. Crocell Hat is powerful, don't miss it.