Four Corners- 40 points
Reach every corner of the Capitol Wasteland.
Northeast is easy, Northwest can be hard but there's a path, Southwest is a *****, and the southeast actually goes off the map. The southern edge of the map isn't bounded very well, and there are couple places where you can get off-map, and enemies are still there. At first I thought I discovered an easter egg, but it's not very extensive.
Caveman- 20 points
Beat Mothership Zeta without using any energy weapons or the Drone Cannon.
Plop Plop Fizz Fizz- 50 points
Make 300 Nuka-Grenades. Is possible, and without Quantum Chemist.
Dragon Slayer- 50 Points
Melee 10 Deathclaws. Hand-to-Hand or ranged damage will invalidate.
A Fair Fight- 30 points
Kill 50 raiders using only Hunting Rifle, Dart Gun, Sawn-off, or Lead Pipe.
AA Gunner- 10 points
Take down a Vertibird.