Some things you can do against Paladin is to probably snare/skid trap -> arrow shower-> just..don't let him hit you, be as far as you can from him, or call a friend, maybe a Creator. Try using LoD bows too. If he calls you noob for ganging, just laugh and type /kis.
As for smart champs, shockwave trap could have brought you to the upper hand but this is a YGG Berry spam server so it wouldn't work. But some lolchamps tend to forget Pnuema, take that as a chance to spam DS. I've never tried using a Sniper here, but afaik, even a Sniper wearing a Usakoring F. Shield wouldn't survive an Asura. FO Spam could probably kill you in a few seconds too.
Hazard is one of those lolpaladins, I wouldn't take advise from him.