Vault of Goblin Dreams

From publisher blurb: Adventure Framework 41 Vault of Goblin Dreams consists of: A downloadable, bookmarked PDF (12 A4 pages, excluding cover & credits, in both parchment and white backgrounds). The Core Adventure (in this instance, an underground complex of 3 sleeping goblin factions, protected by traps. Can the PCs sneak in, stealth their treasures, and escape unharmed?) that will occupy 3-8 hours of session time with Minimal Prep. Rumours & Hooks suggestions.