Challenge


 * Fallout: New Vegas challenges - Challenges $$
 * Fallout 76 challenges - Challenges in Fallout 76.

Other

 * Defeat the professor's radscorpion in three challenges - A quest in Fallout 2.
 * The Nuka-Cola Challenge - A quest in Fallout 3.
 * Cass's Whiskey Challenge - A holodisk in Fallout: New Vegas.