Hints below...
To activate these, click the symbols then do the following for each.
Topless/ Downless:
-Touch nipple to jiggle breasts.
Chest Chaos:
-A shocker will come down. Click her nipple, then click the dials on the board.
-Click slightly below the nipple. Click bulb inside the "trunk" after it descends. Then, click the "leech."
-I'm not sure about the Madness one. =(
Private Parts Massacre:
-Touch her pussy.
-Touch her pussy. Click on pod and wait for animation to commence.
-Turn her around using the cycle button. Touch the fold between her butt cheek and the back of her thigh.
BTW, great game. Besides the specials and moans she makes, I also enjoyed the varieties of customization, the art, and the fluid animation. The breathing effects are great. All I can suggest is making some instructions, because it takes a bit of fooling around to figure out how to play this (not specifically the "specials").