Welcome to Fallout Answers. Type your question below so others may answer it. Remember to read the policies and guidelines before asking.

The Fort Constantine door can only be opened with 3 keys. These keys are obtained during the quest "You gotta shoot em in the head". Go to the Underworld and talk to Mr. Crowley to initiate this quest. Once you do, you will be asked to kill 4 people (only 3 have keys). If you want the awesome item that is located within Fort Constantine, it is recommended that you don't kill anyone. Just force them to give you their key as "proof" of their death. The three people who have keys are Dave in Dave's Republic, Dukov in Dukov's Place, and Ted Strayer in Rivet City. Once you have the three keys, go to Fort Constantine and open the door!

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.