Lazcano is the BOSS in library ,and It has no feeling now ,when you get purgatory,and you will find it has not so much time to kill in one second ,no matter how much blood you have among 2 hours search ,and finally find out one skill which has FS no SOLO.

Like the picture:You cannot stay far away Lazcano ,when you far away he will be charge, so you should choose the nearlly Blood-Magic Blade ,Persistence armour,Poison Dragon,And then draw CARDS northrop attack is to cast-casting-casting-the normal attack repeat, so final two skills select add distance and vertigo shock wave and reduce CD to ring with ice ,passive called method and the reduction of the critical strike CD skills (equipment is bad to also nothing blasting a 1 next CD is enough) ,every time BOSS jumped up and ready to unleash skills or ice shock with ring interrupt and the use of diamond skin damage ,sometimes eat darts BOSS called small blame and darts skills order in a bit of a mess, if is BOSS called out the weird little small blame ,the fastest seconds can best ,or make  heavy to remember the dead duron, didn't just fill BOSS, stop casting started chasing you run ,but don't go too far ,such draw CARDS northrop can this be we injury-free SOLO off.