If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
This may be a crappy bar, but's it's all you have in the world—so hang on to it!
Send your stock flying at the incoming enemies to fend them off. If an enemy reaches the bar and starts causing damage, your morale will decrease. Purchase upgrades between levels. If your morale reaches 0, it's game over!
Use mouse to aim and throw.