I didn't see it posted in this forum so I made a map of the Witman's Folly chest run. It is IMO the fastest map if you are only interested in the treasure hunter and related titles, not the drops.
This map always spawns 3 chests. Most of the times all 3 chests are along the main route (yellow) but sometimes the last chest will spawn far away from the main route, next to the portal to Droknar's Forge. What you want to do is first complete the main route and then you can choose.
- resign and forget about the third chest
- get killed by Azure Shadows and follow the purple route from the resurrection shrine to the final chest
The grawl mobs are so weak, any running build should work. Bring at least 1 skill to prevent getting knocked down in the eastern section of the map by the Azure Shadows which cast Signet of Judgment on you.