Hardcore Leveling Guide for WingElf Priest from Level 1~50:-

As a WingElf Priest, always play to your strengths. Wood elemental monsters are excellent targets because your high intellect means you are resistant to their attacks and you deal extra damage to them because your own attacks are of the metal element.

Level 1 ~ 20:

Just do all your quests and you will reach Level 20

Tip: Make friends with high level players and get them to help you out. The FB19 Weapon will serve you well into your 30s.

Level 20 ~ 30:

At level 20 ~ 22, go to the North Entrance of Ancient Dragon City and start killing Devil Arbor Hide and Envenom Ghoul.
At level 23 ~ 24, walk along the Red Sparrow River at south of Ancient Dragon City, kill those Greater Envenom Ghoul or DenseEarth LeechDrakes.
At level 25 take out Quillhog Enchanter Kaiser. You can move on to Shining Tide Woods to kill Quickening Gnomes, Gigan-Belly Araneids and those level 28 scorpions. When you have reached level 29, go east of Tears of Heaven City and kill those Decaying BaneGhouls at Mirror Lake Residence.

Tip: Purify removes negative effects and is wonderful against poisons.

Level 30 ~ 40:

At level 30, kill those VastCrura Araneids at southern Lake of Sky.
At level 31, go East of Orchis Serene Valley kill the Devil Arbor Root.
At level 33, go East of Orchis Serene Valley, kill BackStab Scorpioc and TigerStripe Araneids, but beware of Argentwave HexSabres.
When you are at level 35, the Killer Pismire around the Orchis Serene Village make a good target.
At Level 36 ~ 37, Try the skies above the Allied Army Camp and kill those bees to keep leveling till level 39. Then go to the Fishing Village to kill those giant spiders until you reach level 40.

Tip: The repeatable rancor quest gives greater than usual reputation for Tiger Stripe Araneids.

Level 40 ~ 50:

Go kill the snakes in the airspace above Camp of Sumor. At level 45, kill those poison flowers at Foredawn Plain, it is a water elemental. At level 46, kill those Wolven Guardsman and Spring WizenXylary nearby. Once you reach level 48, you can change your leveling spot to the sky above Town of Arriving and Skeleton Mountain and start killing those flying serpents.

Tip: Casting Whisht Heart just before an enemy hits you will allow you to keep your HP up while getting hit when fighting difficult monsters.