What do I do once I'm out of the prison?

Hint 1 of 8:

You have not fully explored the igloo.

Hint 2 of 8:

Make your way to the cult igloo and avoid the guards.

Hint 3 of 8:

Look carefully at everthing in the igloo.

Hint 4 of 8:

You are able to take 3 pieces of wood.

Hint 5 of 8:

Why did the Spitzbergenians suddenly turn hostile?

Hint 6 of 8:

Anna pointed to a painting.