The Tenderizer (Fallout 3)

The Tenderizer is a unique sledgehammer found in Fallout 3. Given its name, ability, and location (a Mirelurk butchery), it is likely this weapon was originally used for literally tenderizing Mirelurks.

Location
Located in Anchorage Memorial in the utility room with the broken door. The door can be fixed by finding the Door Component, but note that you need a Lockpick or Science level of 50 to be able to open the safe in which the door component is stored in the top level of the building. A Repair skill of 35 or higher is required to fix the door with the help of the component. Without the component a repair skill of 95 is required.

YouTube Videos
Obtaining the The Tenderizer YQf0yxsFwlc