Crazy Flasher will have you playing for hours on end. In the beginning of the game you'll be able to choose from four difficulty levels: Easy, Normal, Hard and Hell. After you've chosen a difficulty level you'll be taken to the main screen where you'll be greeted with an assignment from your boss. Every mission has in interesting story behind it.
When you begin the first level in Crazy Flasher you'll usually see only a few opponents, but there will be more opponents in the game as you continue to progress to more difficult levels. Your opponents will be armed with weapons such as bats and clubs, and they will do their best to gang up on you. The only way to survive is to stay moving, and use the weapons and attacks you have in your arsenal. By default you are given a pistol, which you can pull out by pressing the spacebar. Once you have pulled out your weapon out you can fire it by pressing B on your keyboard.
Try to keep an eye on your ammo, your energy and your health meter, which can all be found in the top left corner of the playing screen. You can move your character by using the A, S, W, and D keys on your keyboard. To attack you can use the B and M keys, and to jump press the N key. The key to survival in Crazy Flasher is conservation of resources. This means you need to be careful with how many bullets you use and how much energy you use by pressing the M key. The game is addictive enough as it is without having to repeat every single level 20 times.