As usual most of the stat blocks for characters with levels have errors in them.
Also the following passage makes me giggle.
Use the lowest Stealth roll of the party to determine the final Stealth check. In Tier 1–2, they need a result of 10 or better, while in Tier 4–5, they need a result of 15 or better. Failing by 5 or more draws unwanted attention as the PCs are spotted by an Iron Guard patrol
This compels me to ask, what happens if you fail by 1? Is there any good reason not to just lower the dc by 5 and skip a line of text?