Alan Wake

This is incredibly easy to get during Episode Three, the same chapter you get access to the flashbangs. Don't bother wasting them on the smaller groups of enemies, you've got plenty of bullets, batteries and flares to handle them. When you get three or more enemies together drop a flashbang in the middle of them and stand near it. They will come towards you and end up right on top of it, getting blown away when it goes off. This happens pretty fast since Episode Three has numerous situations where you're jumped by large groups of enemies.

Also keep in mind that flashbangs handle in one of two ways:
1: When thrown and bouncing around on the ground they explode after roughly three seconds. Give yourself enough time for it to go off so you don't get mangled by the enemies.
2: If you throw the grenade and it hits someone as it leaves your hand it will explode immediately. This is effectively your panic button. Try not to do this too often since you will often only get the enemy you hit with it and, possibly, blind the others nearby for a moment.

I got this on one play through but if you want to boost it the best place to do it is when your at the fire station and have to wait till you can leave in the helicopter.

At this point if you haven't used any you've picked up you'll have 7-8 flash bangs, wait on the helipad for the taken to get close, drop the flash bang. Once you've used them all just reload last checkpoint. This is also a good spot to get the 4 kills with 1 flash bang

With the following method you can get nearly all of the weapon achievements in the game:

During Episode 3-2 when you are at the Coal Mine Museum, a short way into the level you will walk through a door and enter a building into a long hallway. Three Taken will drop from the ceiling and another will walk in from the left at the same time. Throw a flashbang at the group and you will get all four of them every time. This will also net you the achievement for killing four taken with a single flashbang, if you don't have it yet. Now reload the checkpoint. You will be right outside the door again. Walk back into the hallway, wait for them to drop and flashbang them again. Rinse and repeat to get all fifty.

You can use the same technique to get all of the flare gun kills here. Also, there are a couple of explosive canisters right where the Taken drop down, so you can get your Indirect kills here as well. This is also a great place to get the shotgun/hunting rifle achievement, depending on which one you are carrying.

http://www.youtube.com/watch?feature=player_profilepage&...