After many attempts I finally defeat the plat wolf(2 form) by out healing him, the wolf itself not a problem it the plant that surround him that make the fight so difficult. Even the strongest skill that target the highest HP enemy if you cant one shot the wolf the next skill will target the other plants cuz they have more HP than the wolf. I really hope the future update have skill that target enemy highest max hp or aoe dot damage, it would make the fight a lot easier.