Fallout 3: Part 13 - Flak and Shrapnels & Certain Interests (Very Hard no HUD)

DO NOT, talk to Dr. Madison Li. If you do you will advance significantly in the game with out meeting and going to very useful areas and persons. Also if you see very poor quality weapons of the type you use often then buy them as it is more cost effective to buy them for a few caps than to get them repaired by someone.