Let's see now...
Slaver's stone is marked on the map at the end of the road running through the Old Gate, Crossroads, Stone Forest and on to Slaver's Stone. It starts in Restwell Keep which is not marked on the map, but is wherever you choose to locate it. Normally "somewhere outside, but close to, the King's Wall". For more detail on locations inside the keep, see Keep on the Chaos Scar
Rumble in the valley
Restwell Keep, and unspecified location for the cave
The Radiant Mourn
Location of the Temple is not specified.
Scarred for life
Somewhere near the forest along the Scar's southern border. With a stream.
Nowhere in particular
Head in the Clouds
Anywhere you like. "The Proving Pit lies in a secluded valley that is surrounded by low, steep hills."
Reflections of Ruin
Pit of Delirium
In the catacombs beneath Restwell Keep
The Runecutter's Ruin
A library in a grove of statues, on a hill to the west. You could put this at the Standing Stones or the Pillars of Testing, or anywhere else you deem suitable. Again there is a stream in the maps given.