suggestion: craft a big shield. it helped me a lot when i was clearing crypts for the first time (i used flint dagger, but i doubt weapon matter much as long as it's leveled a bit). having armor helps too (even full leather set) and 3 hp food on top (cooked deer, boar and maybe some mushrooms\berries)

also... you don't have to fight skeletons at all. it's all rng. sometimes you may find crypts that are almost empty. so if you encounter a place with lots of enemies...might as well go to another one.