. +STR : more damage.

+DEX : increase in crit rate for more damage.

Hawkeye
As the slowest of the archer classes, +DEX really aren't your cup of tea, but it doesn't hurt.

. +STR : more damage is good damage.

. +DEX : increase in crit rate for more damage.

. +CON : not bad for soloing, but over time may be just a waste of ss and arrows.

Sorcerer/ess
As a nuker, you want to level with +INT, you may add +WIT later for PvP. dark crystal robes for PvP, nightmare robes for PvE. get a sword of miracles in A grade with acumen Lineage 2 Adena, and/or a sword of valhalla in B grade with acumen. or you can max out your damage with a magic power SA.

. +INT : more damage per spell.

. +MEN: more mp.

. +WIT : faster damage.

Necromancer
Get a sword of miracles in A grade with acumen, and/or a sword of valhalla in B grade with acumen. or you can max out your damage with a magic Lineage 2 Adena power SA.

. +CON : with the "body to mind" skill, more HP = more MP.

. +INT : helps in landing debuffs and by increasing damage from the "death spike" skill.

. +WIT : faster damage.

Warlock
By increasing your attack speed, you increase your cubic fire rate Lineage 2 Adena. using a dagger helps to do this. you may want to get a set of blue wolf light or doom light or robes to +6.

. +DEX : increased fire rate for cubics.

. +WIT : faster heals.

. +MEN : more MP.

Bishop
Note that you cannot change your INT stat. you may want to try to get an avadon robe set to +6. any weapon with acumen will do.

. +STR : good for solo or additional damage in PvE.

. +CON : increased survivability in PvE.

. +MEN : before you get the "balance life" skill this is essential as you will run out of mp Lineage 2 Adena otherwise.

. +WIT : this is also essential, to increase % restored with "resurrection" and fast heals.

Prophet
Note that you cannot change your INT stat. you may want to try to get an avadon robe set to +6, or blue wolf heavy set to +6. any weapon with acumen will do.

. +STR : good for solo or additional damage in PvE.