Sujet : best strategy for the first part of otto's section? (the rat

got size matters a month ago, still trying to beat the first part of otto (the clones of ratchet) and my most favorite weapon has been the shock rocket but, i wonder if its that good. i tried a strategy, using a pda after running out of ammo but, im trying to get the static barrier at the same time and this really wastes my money. any other good way to do the part and maybe the entire otto boss fight?

(this is my first run of the game, ive got Concussion cannon all mods, dual lacerators all mods, acid detonator, no mods. basically, anything besides static barrier, bee mine glove and sniper mine.)

just realized the header got cut out, lol. it meant to say the ratchet clones.