Menhir Guide

At Mar Shral we'll have a ton of awesome mobs. One such mob is the Menhirs. There are three types of Menhirs near Mar Shral. Custodians, Aelders, and Stoneguards. Until you're fairly developed you should leave Stoneguards alone unless in a group of 3+, on the others 2 newish characters can handle them, and 1 character with debuffs can handle them.

If 2 new characters without debuffs, or melee haste
Pop food before hand, wear scale armor (full set) use an r40 or r50 (not polearms), the aelders have range so kill them first if you can, try and drag one at a time. When there are just custodians they're easy peasy. Hit them until you're at a third, find some wall you can jump over that they have to go around, heal, hooray.

If 2 new characters with debuffs, and/or melee haste
With melee haste these get much easier, can even do bone armor. The debuffs you should do if you have them are Slashing/Piercing/Bludgeon debuff (Depending on the weapons used, Necromancy), Disease (Witchcraft), Slow (Water), Undeath (Necromancy), pretty much in that order. Haste each other, and wail on them. They'll go down super quick and you typically wont be in any danger.

If solo
If solo you need atleast a melee debuff and disease, and scale is good if you dont have weapon mastery. There will be times you'll fuck up until you get the hand of it, just find the spots you can jump away and stat up. Once you do though they become excellent to grind melee, and you can easily make 15k an hour if you cycle spawns.

If you do want to go up against the stone guards, you can archer them, but I don't think it's worth it, you can kill them with daggers if you use all 4 debuffs, wear scale, and stat up atleast once. You should definitely have dagger mastery for quickest time.