Darkest Dungeon

At some point while progressing in the game you get the option to go on longer missions/expeditions. First Medium and later Long will be unlocked. The idea is exactly the same, you get a mission, per example, explore 90% of the rooms or win 100% of the room battles but the dungeon is bigger to a lot bigger. The trick is to camp during your expedition/quest. You’ll automatically get camp equipment when selecting a medium (1 camp) or large (2 camps) quest. Note that these camps do take up space in your inventory. When you camp you can use Camping skills to heal, buff and lesser stress to give your quest more chance of success. see It takes more than brawn... for more details on how to get those skills

In the region overview, you can identify the length of the mission by the mission circle (and when selecting a mission it will state the length of the selected mission).

Short mission
Medium mission
Long mission