Short:
The window of the window mode is tooo short; the window mode's ratio between height and width is not the same as that of fullscreen mode and distorts the view.
Pressing F2 by accident causes that you cannot move the view anymore.
Screenshot seems aktivated?
If you increase the speech bubbles' width including the letters, the letters were better readable.
Tutorial ends with the TAB instruktion, while the customer should know that he can also use TAB for getting fullscreen mode again.
The animations are great now! The feet are staying on earth! Sometimes the animation speed could be much slowlier, in moments like taking off her clothes and opening her eyes after getting tied could be in slow motion, to give that moments more intensity.
To give the dance and the stripping more diversity and suspense, and last not least, the possibilities for escalations, divide them into small cycles which are played in variations of speed (ratio: 2,3,4 and slowmotion), but make sure, that they only can change with 'neighboured' cycles. I'm not sure wether you can variate the pan of the model slighty, maybe she would collide with the machines.
Don't let her show everything in the lower levels, let her strip and dance only with her back to the gamer in the first level. This way you give him a motivation to keep playing until he gets the higher levels.
Giving the gamer a wider range to move the view, even if he sees not more than what e actually knows, makes him feel more comfortable. He might move the view in the rythm of the girl's dance.
When he moves the arrow to the bottom edge, he could sit down, and have a look up to the machine from a lower perspectiv and a lower look at the girl as well. When he moves the arrow to the upper edge he stands up again, means, he has the normal view height.
If you give him a restricted move area to move with the arrow - he might feel like Gordon Freeman playing Pachinko.
That's not all! But enough for now!
Good luck at the GDC! And mention my advices in kind words!