From the introduction: This adventure can be can be easily customized to a party of any size or level, or run as a level 9 adventure for 5 players. It can work as a small side adventure in an existing campaign, as a standalone one-shot, or the start of a new adventure. Use the links to the tools in their relevant section to customize the adventure to your party. This can be a challenging dungeon for the unprepared. If your PCs are particularly reckless and death-prone, you may want to bump up the level.