With a limited amount of time on the clock, every person who plays Duck Hunter will want to realize the constraints which are put on those who have the gun. The ducks fly by extremely fast, so it can be very tough to get off a clean shot and knock one out of the sky, however it is very much possible if you pay attention and keep your gun aimed at the ducks. At the top of the screen you can see the progress you are making, with the total number of ducks shot so far as well as the clock ticking down the amount of time you have left till it is over.
You also get a limited amount of ammo, so you will want to use each bullet wisely. Only take a shot if you know you can make it, otherwise save it for a duck you can get. By shooting indiscriminately like some tend to do with other hunting games, you will end up wasting ammo and your time. This game is unique in the sense that it "promotes safe and ethical hunting", so if you happen to shoot your dog, it is game over.
You will also want to avoid trying to shoot the ducks that are far away. Concentrate on those which fly right into the foreground, because you will have the best chance of shooting them. While it is true that this specific hunting game can be difficult for those who are just starting out with it, as time goes on you will learn to perfect your shoot technique.
Directions
Aim: Mouse
Shoot: Left Click