Expedition

Expedition is a game mode introduced in Downpour, separate from Arena and Story modes. Expeditions can be played with Jolly Co-Op. and are able be selected for Expedition at any time, however  must be unlocked by completing the game with either of the previous two Slugcats, and the other five Slugcats are unlocked by completing their respective campaigns. Once a Slugcat is chosen, the player may configure Challenges, Missions, Perks and Burdens.

Jolly Co-Op is possible within Expeditions, with a slightly modified ruleset. Each Slugcat must have completed their campaign to be selectable in Expedition Jolly Co-Op, even if they are selectable within story mode Jolly Co-Op. Additionally, Player 1 is locked to the Slugcat that started the Expedition. This makes it difficult, but still possible, to complete an Expedition as an entirely different Slugcat alone, if on ‘’’easy mode’’’ and Player 1 is killed at the beginning of each cycle.

Completing Challenges rewards the players with points, allowing them to level up. The player is also tasked with completing 75 additional quests throughout multiple Expeditions that require specific conditions to be met, such as reaching a certain level or completing Expeditions as a specific. Missions are pre-made Expeditions for each Slugcat, with most settings already configured. Quests and missions reward the player with perks and perk capacity, burdens, and music tracks that can be played via the in-game Jukebox or set as the main menu theme for Expedition mode.

On the start of an Expedition, Slugcat wakes with 2 Karma in a random  anywhere in the world that exists at their point in the timeline. Inside the shelter are starting items the player chose. To progress, the player must complete the tasks on their list. An Expedition fails if Slugcat dies at 1 Karma without protection.

World changes

 * Karma is capped at 5. Visiting an resets the cycle and, if met below the Karma cap, sets Karma to 5.
 * and start with a Karma cap of 5.
 * s do not spawn naturally. If the Perk is enabled, a Karma Flower spawns at the location of death. This flower does not despawn on subsequent deaths and can only be destroyed by being handled and lost.
 * still spawns a Karma Flower on every death.
 * Slugcat starts with the Mark of Communication.
 * This removes a step in delivery Challenges.
 * Iterators have default, non-story dialogue; for example, does not mention 's pearl or her quest.
 * Arena mode unlocks cannot be collected, but readings can be added to the Collection.
 * This is the only way to add Looks to the Moon's dialogue on the Metropolis Pearls.

Expedition also comes with a built-in manual for the mode, giving much of the information seen here.

Challenges
Challenges are the individual goals that make up Expeditions, and outline the requirements the player must meet in order to win the Expedition. There are three Challenges per Expedition by default. This can be increased to five, or decreased to one. Hidden Challenges have their requirements hidden until the player completes all normal Challenges, but will still have progress tracked and may be completed at any time. Challenges can be made hidden by selecting the eye to the right of a challenge; this will randomize the Challenge's requirements. Challenge types can be filtered; this limit is applied on subsequent requests for random Challenges. Hidden Challenges will not follow these filters. The difficulty slider above the Challenge selection adjusts the number of objectives in certain Challenge types. Progress towards a Challenge is saved on hibernation.


 * Passage: Obtain a specific Passage.
 * The Mother cannot be selected as a challenge. If playing as, The Chieftain cannot be selected. As , The Hunter, The Scholar, and The Wanderer cannot be selected.
 * Multiple challenges for different Passages can be selected in an Expedition.
 * Cycle Kill Score: Obtain a number of points from creature kills in a single cycle. This can range from 20 to 120.
 * Echo: Meet a specific Echo.
 * Multiple Challenges for different Echoes can be selected in an Expedition.
 * Overall Kill Score: Obtain a number of points from creature kills in the whole run. This can range from 150 to 300.
 * Hunting: Kill a number of a certain hostile or neutral creature. This can range from 2 to 15. Adjusting the difficulty slider will change the types of creatures that can appear.
 * As, killing will count towards a  hunting Challenge.
 * Multiple Challenges for different creature types can be selected in an Expedition.
 * Item Collecting: Store a number of the specified item in a shelter. This can range from 2 to 8.
 * Potential items include, , , , , , , and . cannot collect Scavenger Bombs.
 * Multiple Challenges for different items can be selected in an Expedition.
 * Neuron Gifting: Bring a number of to.
 * ,, and cannot receive this challenge.
 * Cannot be selected as a hidden Challenge.
 * Pearl Delivery: Bring a from a specific Region to Looks to the Moon
 * Only regions that appear as a Wanderer pip for the current Slugcat can appear, with the exceptions of for  and, and  for.
 * brings Colored Pearls to.
 * cannot receive this challenge. If the More Slugcats Expansion is disabled, cannot receive this challenge.
 * Multiple challenges for pearls from different regions can be selected in an Expedition.
 * Cannot be selected as a hidden Challenge.
 * Pearl Hoarding: Store a number of in a shelter in a specific region. This can range from 2 to 5.
 * If playing as, or with the More Slugcats Expansion disabled, these will instead be common Pearls.
 * Pearls from chamber count as colored pearls.
 * Cannot be selected as a hidden Challenge.
 * Spear Pinning: Pin a number of creatures to the wall/floor/ceiling. This can range from 5 to 19.
 * Vista Visiting: Go to one of three predetermined rooms in a specific Region and collect a special floating hologram.
 * Entering a room with a Vista point triggers the message "You feel the presence of a vista..."
 * Waterfront Facility, Five Pebbles, Submerged Superstructure, and Rubicon do not have vista points.
 * Multiple challenges for vistas from different regions can be selected in an Expedition.

passage
 * 25 (The Outlaw)
 * 30 (The Monk, The Saint)
 * 40 (The Hunter)
 * 50 (The Friend)
 * 60 (The Dragon Slayer, The Nomad)
 * 70 (The Scholar)
 * 75 (The Martyr)
 * 80 (The Chieftain, The Pilgrim, The Wanderer)
 * Earn  points from creature kills this cycle ||
 * +35%
 * Visit the  Echo
 * 50 (Chimney Canopy, Shoreline, Shaded Citadel, Sky Islands, Farm Arrays, Metropolis, Undergrowth, Silent Construct)
 * 35 (The Exterior, Subterranean)
 * Earn  points from creature kills
 * +35%
 * Kill
 * Score equivalent
 * +35%
 * Store    in the same shelter
 * -25%
 * Neurons delivered to Looks to the Moon
 * pearl delivered to
 * 20 (Shoreline)
 * 30 (Chimney Canopy, Looks to the Moon)
 * 40 (Drainage System, Industrial Complex, Garbage Wastes, Outskirts, Shaded Citadel)
 * 45 (Pipeyard)
 * 50 (The Exterior, Sky Islands)
 * 55 (Metropolis)
 * 60 (Farm Arrays, Subterranean)
 * 65 (The Rot, Outer Expanse)
 * +20
 * Store  colored pearls in a shelter in
 * Store  common pearls in a shelter in
 * Pin  creatures to walls or floors ||
 * Reach the vista point in  || 40
 * }
 * 30 (Chimney Canopy, Looks to the Moon)
 * 40 (Drainage System, Industrial Complex, Garbage Wastes, Outskirts, Shaded Citadel)
 * 45 (Pipeyard)
 * 50 (The Exterior, Sky Islands)
 * 55 (Metropolis)
 * 60 (Farm Arrays, Subterranean)
 * 65 (The Rot, Outer Expanse)
 * +20
 * Store  colored pearls in a shelter in
 * Store  common pearls in a shelter in
 * Pin  creatures to walls or floors ||
 * Reach the vista point in  || 40
 * }
 * Pin  creatures to walls or floors ||
 * Reach the vista point in  || 40
 * }
 * Reach the vista point in  || 40
 * }
 * }

rounded to the nearest integer, where  is the current Expedition Level. Progression beyond Expedition Level 20 is possible but not required for any quest.

Quests
There are 75 quests which award Perks, Perk capacity, Burdens, or music for the Jukebox. Some quests require completing a single Expedition which fulfills certain criteria, and some have objectives which can fulfilled across multiple Expeditions. Quests do not directly require the completion of other quests, and so may be completed in almost any order. Multiple quests can be completed after a single Expedition, and quest rewards are granted immediately after completing an Expedition.

Milestones
The Milestones submenu tracks statistics for completed Expeditions. This includes:
 * EXPEDITIONS
 * Total number of Expeditions completed
 * Number of Expeditions completed for each Slugcat
 * GENERAL
 * Current level
 * Current points
 * Points to next level
 * Total points
 * Number of quests completed
 * Number of missions completed
 * CHALLENGES
 * Number of normal challenges completed
 * Number of hidden challenges completed
 * Number of each type of challenge completed
 * UNLOCKABLES
 * Number of perks unlocked
 * Number of burdens unlocked
 * Number of music tracks unlocked

Jukebox
The Jukebox is a sub menu within Expedition that features a playlist of various tracks that are unlocked as the player completes quests. Each track can be played freely once obtained and with additional buttons set to repeat, randomly shuffle between all tracks, or set the selected track as the music for the main Expedition menu.