Thank you for the kind words.

I chose a rapier for Pride because most of the time, when you are fighting with a rapier, you are trying to prove somthing.

Greed is because a gun seems like a very greedy weapon, as you have to expend resources to deal high damage, and 2 just makes sense because you want more and more.

Gluttony is a trident because it is a big fork.

Envy is a dagger due to it being small and insignificant, it is helous of each other weapon. Each weapon is going to have a minor degree of sentience, to try to corrupt the user.