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The Bigger They Are... achievement for Fallout 3 is worth 20 G

There are 5 Super Mutant Behemoths in Washington D.C. I suggest that the Fat Man's mini-nukes should be used when fighting some of these beasts. However, three of the Behemoths are easily killed with out using the Fat Man. Here are there locations:

1. Outside Galaxy News Radio: You will encounter the first Behemoth during a main story mission. When the Behemoth attacks, you can stay back and let the Brotherhood of Steel soldiers take him out. This is where you pick up the Fat Man.

2. Evergreen Mills: Evergreen Mills is far west of Vault 101. The Behemoth is trapped behind an electric fence. Kill ever Raider in this area, and instead of opening the fence, kill the Behemoth with any weapon (Don't waste a mini nuke) by shooting him through the fence. It will take a while, but this is an easy way on killing him.

3. The Capital Wasteland: Head northeast of Evergreen Mills, and in a certain patch of ground on your map, this Behemoth is wandering about. It may take a while to find him, but when you do, use a mini-nuke. He is very deadly.

4. The Capitol Bulding: This is located deep in the heart of Washington D.C. The Behemoth is located in the basement of the building. Kill him through the door which he is too big to go through.

5. Takoma Industrial: Takoma is far to the east of GNR. Reach the Industrial, and look for this Behemoth in the backyard. Kill him with a mini-nuke.