Many brutal encounters that can be overcome with the right party, fun and flavorful.
Previously the final encounter was extremely brutal but this has been updated, adjusting review due to this.
I've played almost every scenario and have not encountered anything as brutal.
In low tier this effect is greatly reduced so I would give the scenario 4 stars for low tier play and 2 stars for high tier play. Its never fun to be completely out of combat for multiple rounds due to effects you are more than likely to fail saves against.