Here are Knight Guides for PvP archer. Hope these guide can help some knight online players.

PvP Tactics

Play smart. Keep in mind the following:
You are a RANGED attacker, so play accordingly. Don't try to tank or you'll get spanked. Stay off the front of a battle line (unless the enemy is retreating). Being at the front is an easy way to get Novad to death
In Lunar War (LW) and CZ (Colony Zone), many characters will be higher level and/or better equipped than you.

To earn np's, the #1 thing you must avoid is dying (duh!). If you are in a party, you get less than 50 np's per kill but you still lose 50 when you die. Run away bravely at the first sign of trouble. If you don't run early enough, you'll find gaining np's to be tough. Retreat until you find a cluster of blue dots (friendlies) to draw the heat away from you. Once you pass a group of blue dots, it is usually safe to turn around and attack again, because you can outrun anyone Swifted. Run away from any scumbag cheating archer using the Arrow Shower hack. Getting hit by AS hack is like having Spike spammed on you.

You should "probe" enemy players you've never seen before with Shadow Hunter: shoot them and check the damage to get an idea how strong they are. Make a mental note of those targets you can hit for a lot of damage. These are your np donors.

You should frequently press "z" to target the nearest enemy. If you don't see that enemy, stop running and hit "z" so you can get knight noah to them.

To rack kills, be selective about targets. I look for targets in this order:
Mages (weak defense, tend to get pounded by everyone)
Battle priests (weakest defense, but be careful or they'll duff you, and they hit harder and faster than mages)
Rogues
Non-battle priests
Warriors

Mages often have a warrior or two in front of them acting as meat shields so you may have to target mages manually.

Stay out of LW and CZ until you hit level 60. At level 60, you:
get the awesome skill Shadow Hunter (SH). SH always hits for 250% damage unless you contact something in between, like another player or terrain. Without SH you will miss a lot. Most of the other archer skills (aside from SH and AS) are not effective in PvP. The DOT (damage-over-time) skills don't do much damage, esp compared to mage DOT skills, and they have a slow casting time.