There are a ton of youtube guides for level 3 quests out there, but generally you'll want to do something along the lines of using Rings of Recoil and/or poisoning. If you have 63+ farming, you can farm cave nightshades and make Poison dynamite now as well. If you're using Ring of Recoil, you may need to hit a 1 to do "some damage" but I am not super familiar with the ring of recoil mechanics. All of my low combat level stuff has allowed for "some levels" since I planned to do combat later, but just wanted to keep hp relatively low for WT.