If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
You navigate through each stage by using the mouse to shoot your rope at a fixture on the ceiling. But beware of the floor coz once fallen, you will die instantly. Try and get your momentum going so you can go as far as possible. Release the mouse button once you have timed the swing right. You may also collect power-ups. Enjoy!