Most people are good at this on host etc.. or with Rate/armor/acc If your not comfortable with this heres a couple which work Rate/Armor/Crit Makes the jet gun lethal and if you crit with a rail gun shot its usually a kill on a sniper or assassin with no armor Others prefer Rate/Armor/Skill so they can spam the product bomb etc... Also deploying infront of a few 3.3 firebases can be beneficial with the healing of both the deploy and the firebase.... gunners deploy as well... Also best thing to do is nail them with product bomb 3 then spray and pray the rail or burn them and as they run nail them with bomb 2 then a rail.. etc
