| Carter Lockhart |
The Players' Guide does provide some guidance
"Ruthless Rivals: The Shattered Star Adventure Path
features a grab bag of classic monsters, so be ready for
anything! You’ll face many different creature types—
from vermin, humanoids, and fey at low levels to giants,
undead, constructs, aberrations, and evil outsiders at
higher levels."
| Mechalibur |
The Players' Guide does provide some guidance
"Ruthless Rivals: The Shattered Star Adventure Path
features a grab bag of classic monsters, so be ready for
anything! You’ll face many different creature types—
from vermin, humanoids, and fey at low levels to giants,
undead, constructs, aberrations, and evil outsiders at
higher levels."
This list is pretty accurate.
humanoid (human) is useful early on. A few of the adventures have fey creatures, and humanoid (giant) is pretty common in two of them. Undead and evil (outsider) are always solid choices, and there's no exception here. One surprising enemy type is construct. They have good representation in most of the adventures, but for one adventure in particular, they make up around half of the encounters.