Where are the dream entry points?

Hint 1 of 10:

Three rooms contain the major entries.

Hint 2 of 10:

While in the dream mode, look for things you can click on.

Hint 3 of 10:

Any item which looks like it could hold your reflection might work.

Hint 4 of 10:

You will have to play two separate nightmares in each room.

Hint 5 of 10:

Each concerns a victim and a victimizer from their point of view.

Hint 6 of 10:

Look on the table in the piano room upstairs.

Hint 7 of 10:

You can enter the wine glass and the wine bottle there.

Hint 8 of 10:

Look downstairs in your uncle's study.

Hint 9 of 10:

You can enter the letter opener and the bird cage there.