The Colosseum quest is a special quest given out by Bartilo that is extremely important as it allows access to both the Third Sea and Race V2. The quests are pretty easy if the player uses an Elemental, large AoE fruits/swords, or Buddha.
Instructions[]
The player first needs to reach Lv. 850 to achieve the quest. Talking to Bartilo before reaching Lv. 850 will result in him saying "THE COLOSSEUM IS IN PERIL!". Once Lv. 850, interact with Bartilo who is located at the Café and he'll first ask the player to defeat 50 Swan Pirates (also giving 
50,000 and 35,000,000 EXP35,000,000 EXP for the task). After this is completed, the player must go back and talk to him again and he will ask the player to kill Jeremy who is located on the mountain near the Swan Pirates location. After this is completed, talk to him once again and he will tell the player to rescue the Gladiators.
Location of the Gladiators
The Gladiators, who are locked in a room under Colosseum, can be rescued by solving a puzzle in the same location. The code to the puzzle can be found on a table in Don Swan's Mansion. All codes on the wall need to be pressed in order(by simply running into the buttons), as described below. After finishing the Colosseum Quest, the player will receive Warrior Helmet, the ability to talk to Alchemist, and access to King Red Head.
To remember this code, type in chat Y ∞ C S M F H B as that's what the symbols resemble. (The player can copy it from here and type it into the chat if they don’t know how to type the infinity symbol) It also has to be pressed in order, from Y to B (the player doesn't have to type this in chat to work).
Trivia[]
- The quest of the trial saves, even when the player leaves, but the Swan Pirate's part does not save because of the same system of normal Quests.
- The code for freeing gladiators is this: ᛉᛞᛈᛃᛖᚫᚺᛒ
- The same symbols from the code for freeing gladiators can also be seen in Buddhas awakened transformation.