If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Try to save the village people from great danger and complete quests to become stronger. To complete your quests you will be fighting countless of demons in real time. Select weapons from a huge number of bows and guns.
W,A,S,D or Arrow keys to move around.
Space bar to interact with items.
Mouse key to shoot.