Some translation issues and suggestions.
This is content that players can see, but cannot be translated locally.
If possible, can the functions in the dungeon editor be translated by users? This will make it easier for users whose native language is not English.
Let the custom difficulty have more dungeon settings that can be added. For example, in different difficulty settings, you can set different numbers of resurrections, different team sizes, different clearance times, and if you can have different items that players can carry into the dungeon with different difficulty levels (this way Items that can be used on higher difficulty levels can be restricted).
Can the built-in team system be operated through the GUI? For example, by viewing the team members' GUI, the team leader can kick team members out or invite them...