You must perform Weapon Skills and Skillchains on monsters that con Easy Prey or higher.
You receive 1 point for opening/soloing a weaponskill, 2 points for closing a Lv.1 Skillchain, 3 points for closing a Lv.2 Skillchain and 5 points for closing a level 3 skillchain.
You must accumulate 300 total points.
the latent effect will dissapear regardless of whether you unequip or not. the effect givin will go away, eg. fire+10 will be in effect untill weapon is finished, the fire+10 will go away when the latent is broken.