Yes, already done that.
My BL is currently at lvl14 with 10k HP. As soon as I get mobbed, I use the skill that surrounds you some stones (forgot the name) and skill spam.
Qs: If the description says "Blades weapon" is it refering to what kinds of weapon? Is hammer included because there is a skill on the same skill tree that effects atkspd when using it? And this are not a stupid questions, aren't they?