Fallout 4 includes a number of unique Luck Perks each tied to the Luck attribute. The first rank in any Perk only costs 1 point, while further ranks often require a higher level to obtain. However ...
Fallout 4 includes a number of unique Agility Perks each tied to the Agility attribute. Unlike previous iterations of Fallout, leveling will mainly be tied to Perks instead of the usual skills.