You are playing in Nightmare mode.
Forced: When an enemy with the ambush keyword engages a player during the quest phase, it contributes its to the total in the staging area until the end of the phase.
Begin with the standard quest deck and encounter deck for the Road to Rivendell scenario.
Remove the following cards, in the specified quantities, from the standard encounter and quest deck:
1x Orc Outpost (quest stage 2)
2x Ruined Road
2x Barren Hills
1x Goblin Taskmaster
4x Black Uruks
3x Mountain Warg
3x Bitter Wind
2x Warg Lair
5x Goblin Spearman
2x Goblin Archer
2x Plundered Armoury
Add the new quest card in this Nightmare Deck to the normal quest deck, in stage order. Then, shuffle the encounter cards in this Nightmare Deck into the remainder of the standard Road to Rivendell encounter deck.
Finally, flip this setup card over and place it next to the quest deck. Its effect remains active throughout the game, which is now ready to begin.