2 small changes I made that helped things to make more sense.

[outshyn]

1. Why can't PCs track the goblins?

Regarding the initial goblin raid on Sandpoint, I've solved an issue that has been discussed here in the forums. That is: the players want to run off and hunt down goblins right away, but they shouldn't because Shalelu is supposed to do the initial goblin reconnaissance. So how to keep the PCs in town? And why couldn't the PCs immediately start tracking goblins the moment they decide to do so? Well, check out Gogmurt's stat block, page 44 of the Anniversary Edition. He has Brew Potion. So what I've done is to add a potion brewing kit to his lair, but I gave it the "broken" condition to account for goblins being awful at this stuff. And then... I had him brew tons of potions of Pass Without Trace, which is on his spell list. These were handed out before the raid. There were not enough for everyone, however.

Goblins that escaped after the raid will leave behind empty potion bottles right outside of town, where the trail goes cold. However, the module suggests that some goblins suicided after the attack by jumping off the cliff. Those goblins I decided had not been given potions of Pass Without Trace, and knew they would lead PCs back to the goblin camps, so they jumped off the cliff instead. My intention is to not reveal anything about the potions -- even "lingering" effects should be gone by the time the PCs mess with the bottles, so they will not be able to use skill check like Spellcraft to determine what the potion was. However, by the time they find Gogmurt it will all make sense. Gogmurt will still have a few unused potions on his person when he is finally discovered.

2. The Sandpoint Devil

For anyone running the Sandpoint Devil encounter, I modified the stat block in 1 small way: I gave it the 3rd party ability called Mistsight so that it could see through its own weather effects such as Fog Cloud. If you don't like 3rd party stuff, there is the official Cloud Gazer feat. It's not as good (visibility will be about 15' depending upon how you read "triples visibility"), but it gives some advantage. I'm running a gang of old grognards through these modules and I need to make it scary when the fog rolls in and something Spring Attacks out of the clouds and then disappears back into the clouds.

[Kalshane]

For what it's worth, when my PCs were all fired-up about tracking the goblins, I had an incredulous Sheriff Hemlock ask "You bunch want to go tearing off into the woods at night after a bunch of bloodthirsty maniacs that can see in the dark?" which made them decide to wait until morning. A heavy rainstorm overnight conveniently (for me) muddled the tracks. They ended up making their best effort at following them. They didn't find the raiders, but they did find some goblins that had attacked a merchant wagon. (I used this to introduce Bruthazmus and Shalelu, as someone else had suggested on the board.) Once the goblins were slain and Bruthazmus was chased off, Shalelu asked the PCs to accompany her back to Sandpoint, as she had urgent news for the Sheriff. (She then did her info dump about the various goblin tribes on the trip back to town.)