when i pick. it's as if im using both the wrist and my fingers. i tried to just pick using my wrist but my fingers kept on moving. i'm not sure whether this is a good thing or a bad thing.

S'alright I move pretty much everything when I pick. Wrist, fingers, and even a bit of elbow jiggle in there...
Quote by Kensai

Awesome guy right here
I think it's actually better to pick like that...
I know loads of good guitarists and teachers who encourage thumb motion while using the wrist.
Norifumi Shima does this and look at videos of him on YouTube.
Quote by AlanHB
Yeah well in special UG land chords = noob, scales = intermediate and modes = advanced. Most users are trying to finish the game on hard because then you get the trophies for noob and intermediate difficulties upon completion anyway.