Expedition
Crossing Void - Global Guide
Expedition is a multiplayer coop mode of the game which allows you and other players to deploy a main or sub character of their choice to make up a team and challenge the selected stage’s opponent. The rewards are various Curios or Curio-related items. The quality of the rewards will depend on the difficulty level as well.
To join, you’ll need tickets. Three tickets are given each week and you can hold up to 6. A Victory costs 1 ticket. Joining has no EN cost and no Crosser EXP as well. You can still join after your attempts have run out however, you won’t get any rewards. You can only have 1 attempt from Mon-Sat. On Sundays, you can have up to 3 attempts.