The Duel Arena is a place where you can face another Adventurer 1 vs. 1 for two minutes.
You can tap on the [Duel Arena] menu from the main menu (≡) to view more detail about the Duel Arena, such as ranking information.
A match will end immediately when either of the character's HP reaches 0. If both characters are alive at the end of the match, then the winner will be determined by factors such as the amount of HP (%), Season Points, or Level.
You cannot use HP/MP Recovery Potions in the Duel Arena, and some equipment restrictions apply.
The Duel Arena runs in a seasonal system, and you can obtain rewards through tiers and rankings you reach within each season.
You can also obtain daily victory rewards for your first win each day.
The Duel Arena is open in 4 time slots with the following hours (based on your server local time):
Monday through Saturday (4 times daily):
00:00am~02:00am / 06:00am~08:00am / 12:00pm~02:00pm / 06:00pm~08:00pm (your server local time)
The season and time period can be viewed on the top right side of the Duel Arena screen.