If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
No game is fun when there is no penalty for losing. In this game you’ll have to pay the ultimate price if you fail.
The situation seems highly unfair, as you're staring down the barrel of a gun and the other guy only has the risk of spraining his index finger.
Luckily the adrenaline rush has raised your senses and time seems to slow down as the trigger is slowly pulled back. It only takes a few milliseconds to determine if you are a total hero or a complete idiot.