Thor's Hammer FAQ
Use what the monster gives you-
The monster drops a Great Poleaxe. You need it to go further. You have to hit something with it. If you don't have one or the monster doesn't drop it as he should---you can tap something on a wall near there and get it if you haven't already.
To repair the switch in the Flooded Caves, you need repair greater than 17.
Repair the bridge to Holy Island--You need a Master Repair Hammer from the base game or from Ice and Fire.
For removing the trap that sends you back in St. Aidan's Crypt, there is a small three switch puzzle you need to do.
To close the hole in the Chevron Mines there is of course a switch and then you need to remove a rock by casting a hot spell.
To receive the gold hair from Forkbeard, you have to hoist it out of the ground where he keeps it.
Phredd is in the Arena of Flames.
The Sword of Sweet Revenge is in Bloodmail's Fortress.
How to get into Humbria Jail--go into Humbria Castle and speak to the guards around the lord's door. If your crime is high enough, they'll help you go to jail. You can get infected with evil in Humbria. A door in middle-right part of the town.
Villi--the keys for Villi-there is a crack next to the jailor, explore that.
Old Tunnels--there are four ways to get into the Old Tunnels--two drains in the village that give you entry. But there is also a hole in Foggy Islands. And a hole in Regnald's Basement.
Otto the Armorer sells a Miner's Axe.
The music scrolls are outside Lord Gorum's keep. Check the usual suspects--bushes, rocks, hollow trees, ponds.
Chest for Old Kon--you have to explore Hobbes' Hole. You get there from the Whispering Maze.
Cureall statue is in Brass Horn's cave. You have to step carefully over the void and remove a pillar by a switch in the far northwest.
Otto is on Bream Island.
If you need a rock—there's one in the base game. There's one in Jotunheim by Jotun on the ground that respawns.