I apologize for the late response, RL got out of hand for a minute.
With Lanterngeists, a few IDs got mixed up. I've gotten around to fixing them, so the issues should all be gone with the next patch, which'll ship in just a bit.
Starforce only charges when attacks are blocked, rather than just when taking hits; this is working as intended with Riftkeepers. Small Fortune is also working fine in my tests, although it isn't shown in the victory text; I could potentially go into the code and add that properly in the future. (I could also give the cliffs another look in the same update.)
There should be enough keys for all 7 doors in the Sanctum (Minor spoilers ahead):
-2 on Floor 1
-3 on Floor 2
-1 on Floor 3
-1 on Floor 4
One of them's behind a hidden passage, that might be the one you missed.