This is a fun module but runs long, especially if you include the faction secret missions. Give yourself 4 hours rather than the listed 2. The module has an awakened giant ape way up in a tree throwing rocks. I wondered where the rocks were coming from. I finally decided that the rocks were very smelly and splatter all over whatever they hit. My players found this very amusing. The addition of the Zhent secret mission made this a very difficult fight and it is not scaled for APL. Watch out that you don't overpower the characters. The temple of Ubtao wasn't that tough because the wizard fireballed the trees and 2 kamadans but one shotted the trees because they were vulnerable to fire. But the Order of the Gauntlet secret mission was extremely tough because of a lack of magic weapons for fighting the Clay Golem. This could potentially be a TPK if you don't watch out. I had to have the party do a long rest on the mountain top before going onto the Cyst because they were so drained fighting the Clay Golem. If you aren't running the secret mission, it shouldn't be a problem. I didn't have any Lords Alliance players so we didn't have the Cyst shooting but it could be disasterous for a party longterm because of the death curse and permamently reducing the maximum hit point total. The secret missions make this scenario potentially too difficult particularly for a low APL party.
[4 of 5 Stars!]