For the intro (arpeggios) part , the Am & Dm are swept throughout (play the Dm arp from the 10's position) , the A7 & G#dim have small sweeps on the higher notes of the arpeggio , and the E7 can be alternate picked throughout if you changed the e-7-| (B note) into b-12-| .

The rest of it is strictly alternate picking , with few economy picking here and there ... You can ignore those and just alternate pick if you like.