Secret Questline — Step-by-step

Give the drunk boar guy the sobering stone
[steam_guide:3388474470]

Meet the boar guy at the Tiger Temple
[steam_guide:3388474470]

Give the boar guy a jade lotus
[steam_guide:3388474470]

Bring the boar guy the Arhat Gold Piece at his first spot
[steam_guide:3388474470]

Return to Pale Axe Stalwart near the chapter start and exhaust dialogue
⚠ Missable after: second elemental cart
[steam_guide:3388474470]

Reach the fourth cart and find Pale Axe Stalwart already in combat with it
[steam_guide:3388474470]

After beating the fourth cart, talk to Pale Axe Stalwart and exhaust dialogue
[steam_guide:3388474470]

After the ball part opens a new path, follow it to the final elemental cart
⚠ Missable after: ball part
[steam_guide:3388474470]

Defeat the final elemental cart and talk to Pale Axe Stalwart one last time
[steam_guide:3388474470]