this build as an advice for u

lvl1-21 (inc max atk and range, per lvll inc 0.5)

lvl22~38 (inc min atk, per lvll inc 1%)

lvl39-48 (inc hp, pre lvll inc 8 hp)

lvl49~58 (inc anger duration, per lvll inc 3s, when angry char inc attack and defence)

lvl59~68 (inc accuracy, per lvll inc 2, the high accuracy can inc alittle atk)

lvl69~78 (inc the critical attack rate, per lvll inc 1% and available for normal attack currently)

lvl79~80 (inc three hit rate, per lvll inc 1% and it seems available for normal attack)

lvl81~90 (inc arrow atk, per lvll inc 1)

ps: for archer, slow normal attack speed lead to they usually use the skill attack when they lvll up.

assistant skill

lvl15 inc movement speed

lvl60 highly inc movement speed

lvl20 useful skill for escape

lvl45 inc super critical attack 10%, super critical attack twice normal attack(power and speed).

lvl55 reduce 20 dodge to rise 40 accuracy

lvl55 reduce 20 accuracy to rise 40 dodge

lvl60 inc oneself and others' skill defence

lvl60 inc oneself and others' skill attack

ps: archer is the only class can strengthen others except for healer.