Consider removing that 10% heal efect on weapons it`s way 2 OP.I was fighting with staf from level 1 and reached 5 stars not only without any problems but later on after geting some atack speed face tanking all mobs bosses included.
The last 3 zones are really nice chalenge when U want 2 do brillant.Everything alse is however way 2 easy,specielly with "cut out mastery" and "Timber yard".Or nerf those two or make rest of zone far more hard.