Intrusion is a challenging adventure game on www.flash-games.net for free. The goal for you is to clear the level by killing enemies as many as you can till you complete the task. In the game, you can use ‘W’, ‘A’, ‘S’, ‘D’ keys to control your movement and number keys of 1 to 4 to select a weapon. On your adventure way, when you encounter your enemies, move the mouse to aim and click the left button to shoot at them. Be careful your own safety! You only have three chances to complete the task. Come on and good luck!