Alone in a hostile land, cut off from help, you struggle to find your bearings...
Each player cannot have more than 5 cards in his hand. (If you have more than 5, immediately choose and discard cards from hand until you have only 5.)
Response: When this stage is defeated, each player draws a card.
When Revealed: Each player must choose: either raise your threat by 1 for each character you control, or discard a character you control.
Shadow: Attacking enemy gets +1 
If this attack destroys a character, raise each player's threat by 1.
When Revealed: Each player exhausts a character he controls. Until the end of the combat phase, exhausted characters cannot ready.
Shadow: Until the end of the round, defending character cannot ready.
Some of your companions have been poisoned! They need a remedy to counteract the venom.
Treat the printed text box of each damaged character as if it were blank (except for Traits).
Response: When this is defeated, heal 1 damage from each character in play.
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1
3
Players cannot declare defenders against Sand Viper.
Forced: After the players travel to a location, Sand Viper engages the first player.
To some suddenly it seemed that they saw a snake coiling itself to strike.
–The Two Towers
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4
Forced: After Giant Scorpion damages a character, that character cannot ready until the end of the round.
Shadow: If this attack deals damage, the defending character cannot ready until the end of the round.
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12
Cannot have attachments. Cannot take damage.
Brood Mother engages the first player.
Forced: At the end of the round, search the encounter deck and discard pile for a Spider Broodling and add it to the staging area, if able. Shuffle the encounter deck.
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5
While On Track is in play, Hive Guardian gets +2 and -5 engagement cost.
Shadow: Attacking enemy gets +1 (+2 instead if On Track is in play).
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While On Track is in play, Spider Broodling gains surge.
Shadow: If On Track is in play, put Spider Broodling into play engaged with you and deal it a shadow card.
Immune to player card effects.
Forced: After Spider Burrow becomes the active location, flip the Search objective to On Track and add Brood Mother to the staging area.
Forced: When Spider Burrow leaves play as an explored location, set Brood Mother aside, out of play (unless the players are at stage 3B).
X is the number of characters controlled by the first player.
Travel: Reveal the top card of the encounter deck to travel here.
Travel: Shuffle the encounter discard pile into the encounter deck and discard cards from the top until a Creature enemy is discarded. Add the discarded enemy to the staging area.
...a nasty, dirty, wet hole, filled with the ends of worms and an oozy smell...
–The Hobbit
While On Track is in play, Cobwebbed Cavern gets +2
Shadow: Exhaust a character you control.
While On Track is in play, progress cannot be placed on locations in the staging area.
Shadow: Discard an attachment you control.
When Revealed: Either flip the Search objective to Off Track, or deal 1 damage to each questing character.
Shadow: If On Track is in play, attacking enemy makes an additional attack against you after this one.
You've lost your way underground. You must retrace your steps to get on track.
When Revealed: Flip the Search objective to Off Track. While Lost Underground is in play, the Search objective cannot flip. (Do not resolve the Track keyword.)
Response: When this stage is defeated, flip the Search objective to On Track and ignore its Forced effect until the end of the phase.
Several members of your group were seized by spiders in the night and dragged away from camp. When the sun came up, you followed their trail to a large cavern entrance and entered in.
Setup: Set Brood Mother aside, out of play. Add the Search objective to the staging area (Off Track face up).
Inside the cavern entrance you find a large maze of tunnels criss–crossed with all manner of prints. It is impossible to discern which are the tracks you seek, so you begin to search all around.
When Revealed: Discard cards from the encounter deck until X locations are discarded, where X is the number of players. Add each location discarded by this effect to the staging area.
It is hard to keep your way in the dark labyrinth, but you are certain that you are headed in the right direction.
When Revealed: Flip the Search objective to Off Track. Shuffle the encounter discard pile into the encounter deck and discard cards from the top until X enemies are discarded, where X is the number of players. Add each enemy discarded by this effect to the staging area.
Cobwebs line the cavern walls and the spiders are growing more aggressive. You must be getting closer to their colony.
While On Track is in play, encounter card effects cannot be canceled.
Your search has led you far underground, to a large cavern full of giant spider eggs. Along the walls, you see the cocooned bodies of your friends bound with many strands. At the center of the chamber is the enormous brood mother. She glares at you through many bulbous eyes and a poisonous froth bubbles from her fangs. You must find a way to defeat her in order to rescue your friends.
When Revealed: The first player adds Brood Mother to the staging area. Each other player reveals an encounter card. Flip the Search objective to Off Track.
While there are at least 5 progress tokens on this stage, Brood Mother loses the text: "Cannot take damage."
Forced: After the Search objective is flipped to Off Track, remove all progress tokens from this stage.
This stage cannot be defeated while Brood Mother is in play. If the players defeat this stage, they win the game.
Forced: At the end of the quest phase, place 1 progress here. Then, either return the topmost location in the encounter discard pile to the staging area, or raise each player's threat by 1 for each resource here.
Progress cannot be placed on the main quest.
Forced: At the end of the quest phase, search the top 3 cards of the encounter deck for a card with 'On Track' in the lower right corner, add it to the staging area and discard the rest. If no card enters play from this effect, flip this objective.
Forced: After the players quest unsuccessfully, flip this objective.