The content here is great. The hook makes sense. Each of the 5 mini modules makes sense. However, it's clear very fast that someone is getting to the cache ahead of you, which means a good strategy for the PC's is to skip to the fifth cache as early as possible to try to overcome that. So skipping content is likely. Also, our party of 5 level 1's would have gotten completely wiped by the badgers if I wasn't being awfully generous, and yet absolutely owned the steam and ice elementals in the final shrine along with the four giant owls outside. Seems to be a bit of an imbalance that needs to be overcome.
Otherwise the story is great and the content is really fun...there is just some clunkiness in execution.
[4 of 5 Stars!]