Thor God of Thunder

Note: Two collectibles are only obtainable on Hard or Very Hard difficulty.
A Friend in Need, Guardian, Giant Breaker, Observant: Story Based
Commander: When the game first shows you how to enter and use whirling hammer mode you need to destroy some ice born and some lasers, while some guys (the Einherjar) climb the cliff below. Take out all the enemies quickly to prevent any of the guys being pushed off the cliff.
Grappler: Press B near 10 different enemies.
Homeland Defence: Kill 50 Enemies.
Collectables:
1. Behind you before first leap. (Health)
2. Behind you after first leap.(Odin Force)
3. Along the corridor filled with ice cloud after you gain the wind blast ability. (Lightning colour)
4. On the platform after you use Thor’s might to knock over the statue. (Health)
5. After first save point, leave chamber and put out flame on the left. (Hard only)(Health)
6. After destroying the ice barrier with thunder trench, turn round and destroy the crystals in the far left corner (Odin force).
7. Behind the horn that you release from the ice. (Hard Only)(Odinforce)
8. In the Bifrost bridge chamber to the right of the door. (Lightning Colour)