And now the section you've all been waiting for. How to p0wn face in PvP! Lets jump right into it, shall we?
Tip 1: Don't listen to a lvl 36 'Sin with a K:D ratio of nearly 1:2.
Yes, I'm referring to myself. And no, I don't really want you to ignore me. I'm just pointing out that no, I'm not the most experienced PvP'er, and I don't claim to be able to "p0wn" at will. Though I will also point out that, while my K:D ratio is awfull, that's largely due to the fact that one of the things I do to learn how to fight other classes is seek out classes that are notoriously difficult for 'Sins (read: Guardians) or classes I'm really bad at fighting (read: Just about anyone else, with the exception of other Sins, Necros, and Demos). Additionally, I tend to only fight players that are 7+ levels higher than me, as I feel I learn more. There's no PvP penatly at the moment, so who cares if you lose?
Real Tip 1: Suprise! [insert line that only I find wity here]
Stealth works much better in PvP than it does in PvE (but make sure you max it out each time you level). We're a class that dies in about three hits--do you really expect to be sucessfull if you announce yourself first? "Hey, you. Barbarian with all the stuns and CC. Yeah you. I'm squishy, and you can pound me in a few good shots. So get that 2H'er ready, here I come!" Not the most effective (or Assassin'esque) technique. You don't *have* to jump everyone when they're at half health, or fighting mobs. And I'm certianly not saying attack while they're talking to an NPC--thats something I can't stand. But attacking when they least expect it is key to sucess.
Tip 2: He who's losing and runs away, Lives to kill while the other person is busy calling you names in OCC chat.
Okay so that saying's not as catchy as the classic. The point is, don't be above running away! Particularly if you're not the one that initiated (i.e., someone jumps you while you're questing). I take it personally, so I never run far. But get around an object and out of LoS (Line of Sight). You break combat fairly quickly in AoC, and if you can get behind something you can often restealth even if you were just in combat a second ago. Plus getting out of LoS helps prevent them from using a bow or ranged weapon to slow you down.
Stealth, get back to full HP, and attack on your terms.
Tip 3: Jousting
A lot of people are going to be movers. They know that you can't land your combo if they move out of the way. It's the same for them. But with daggers, we have the smallest arc, so it doesn't take a whole lot to get out of the way. Remedy? You can "load" your combos by starting them, and going through each move except the last one. Then, wait for them to dance in range, and unleash the last attack. This takes practice, but really isn't *that* difficult. The other thing you can do against melee classes, is for YOU to retreat, and load your combo. It's human nature for the agressor to run straight at you--they want to get there as soon as possible. That means you'll have an opportunity to unleash the combo and then you can move again.
Obviously you don't want to try against a ranged class.
Tip 4: Learn when a Win is a win
Okay, so sometimes we will be "melting face" and the person will flee. I bound my xbow to a simple single-key (C) so that I can quickly swap and try to snare. Sometimes it works, sometimes it doesn't. (For those who aren't aware, a xbow hit to the back gives a chance to slow the target). But sometimes just chasing someone off is a win in and of itself. I know, I'd rather get the kill...and if they scamper, chances are they'll come back. Be waiting for them. But, personally, when I fight a guardian that's 3 levels or more higher than me, and he's forced to run away, I still feel great about it.
...lastly, I'll talk about this more in my Feat/Talent entry, but the General Tree is your friend. I know, it sucks having to invest your first 20+ points into the generic tree...that's not fun or sexy. And you don't *have* to do it. But a lot of the complaints assassins have can be fixed by the general tree (Ex. "Rangers and casters just root and nuke! It's BS!"...well, escape artitst works most of the time, and then completely throws off their game plan, often giving you a little advantage.) Again, I'm not going to tell you you have to build your toon this way or that, 'else your a nubcake! But as dissapointing as it is to have to wait to put points in Lotus or Corruption, General Tree does help quite a bit.