Thor: God of Thunder

Asgard -
1. Behind you before first leap.
2. On the platform after you use Thor’s might to knock over the statue.
3. After first save point, leave chamber and put out flame on the left. (Hard only)

Niflheim -

1. At the exit of the first cave look left and use the grab points to reach the ledge above.
2. In the tunnel after the first battle, hammer throw it down from the ceiling half way along.
3. In the icy wind cave reach the far wall then turn around and hammer the ice pillar on the left. run up the pillar to the item.
4. Once you get to the front of the palace bridge, where the storm is blowing, look down the front right side of the bridge to find a hidden ledge underneath.
5. At the top of the inside of the spire after the wind lift go left and kill the jade bot. Then go right over the ice shards and on the top bridge is the collectable.
6. After defeating Ymir you land in front of the cave of ages. To the left of the door is a grab point. Use it to reach the collectable.

Vanaheim -

1. As soon as you enter the second room drop down to the right and the hammer is in a cave under the door.
2. In the first area after the beacon look up in the tree to the right. Use hammer throw to knock it down.
3. Whilst piloting the small boat you will be attacked by Skraelings. At this point jump of to the left of the boat, through the gap in the trees and you will see it on the left, below the swamp troll that you will hear as you approach.
4. During the barge ride you will have to stop and use a bomb chain to open the door to the lock. In here you will see a large blue light on the ceiling. Hammer throw it and the collectable will fall down into your path.
5. In the crushing wall room, at the far end.
6. After listening to the large recorder take the lift up, its behind you. (Hard only)

Muspelheim-

1. After your first encounter with the scorchers, look for an ore carrier in the far right corner. Destroy it with a throw and a fly point appears. Use it to get the collectable.
2. Use the drill to destroy the barrier. Then fly over and kill the burning scorchers. Look up and destroy the ore carriers, one will drop a prize.
3. After destroying another barrier with a drill you reach a save point. To the right is a layer of lava cloud, blow it away and claim the item.
4. After destroying the anchor shield generator on the left you have to fly down to a platform and fight some scorchers and a carrier. After battle head to the back of the platform and look over the edge. You will see a small rock you can jump down onto , dash onto the ledge around the bottom of the platform to find the hammer.
5. Head up the path killing the flaming scorchers. At the end, before the jump point, go left for the hammer.

Asgard Besieged-

1. After the jump you will find a save point. Smash the crystals up on the ledge opposite and it will fall down.
2. Head to the back left of the palace to find it behind the last pillar
3. Behind the horn during the de-icing (Hard Only)
4. After throwing the bomb it will fall down into the arena.