How do I win?

Hint 1 of 12:

Make sure you get the key from the ground.

Hint 2 of 12:

Isn't there some place that you've always been wanting to go?

Hint 3 of 12:

Of course there is.  Can you think of a locked door that you haven't been
able to open?

Hint 4 of 12:

There's one in the Aquarium.  Use the blue key to unlock that door.

Hint 5 of 12:

Go down and see what you can find.

Hint 6 of 12:

Make sure to pick up the items that are on the floor.

Hint 7 of 12:

The columns are holding up the entire aquarium.

Hint 8 of 12:

At least for now.