We Can Run Away Now They're All Dead and Gone
Snow Patrol

for bass to start with, then both guitar parts

any help would be HUGELY appreciated

I've not listened to it in a while, but have you searched elsewhere on the net?
i've looked all over the internet and cant find an accurate version anywhere.
its mostly the guitar picking part that im having difficulty on.
and also the bass line, which is mostly just the main chords but has some variation

To the first reply... the song is "We Can Run Away now they're all dead and gone" by Snow Patrol.