Sky Trail can enter by talking to NPC "Gerneral William" in Cloud City.
Daily Attempts: 10 time per day, but players can add more attempts by using Celestrial Stones.
- Players have to defeat a boss before they may challenge the next one.
- An assessment is given for every stage that is cleared.
- Stages that have been given an S assessment cannot be challenged again, but players can repeatedly challenge a non-S assessment stage until they get an S assessment.
- If all Bosses on a level are defeated, players can proceed to the next level by clicking "Next Level".
- Players will receive level rewards once they clear a whole level of stages. Stages that have not received an S assessment can still be challenged, but attempts will still be used.