Requires level 60 (for thief) or 80 (for ranger) and hide at 10 and sneak at 10.
Go to the The Rusty Nail bar in Medienne, from the Cross Roads go south then west.
A bartender tells you (in primal): "You look like you might be looking for someone... But you're going to need to get his attention. There's an Abandoned Storage Room east of the leather shop, you might find something useful in there."
Go to the room One west of the Player’s Lounge (in Medienne) and climb wall.
climb wall
After up climb up, then squeeze gap to get into the office.
squeeze gap
After you get into the office then search paper to get a bill.
search paper
With the bill in your inventory, go back to the The Rusty Nail.
Someone chuckles.
Someone whispers to you (in primal): "I see you have tracked me down... Very good, I may have use for someone with your skills."
Someone whispers to you (in primal): "I will make you a deal, if you agree to slay a certain wizard who has earned my wrath, I will teach you the mastery of remaining unseen. Merely say 'yes' to agree."
say yes
-*- You have been assigned a quest! -*-
Someone whispers to you (in primal): "Excellent. Krasnog is the one I wish to see liberated from this mortal existence. You probably know of him, though I would advise warding yourself against electricity as he has an unhealthy obsession with lightning-based spells."
You now need to go kill Krasnog the mage in town.
Go to the Medienne sewers and go all east, kill the skeleton who pops the key to unlock the eastern door, from there go up through Krasnog's shop's backdoor and wait.
At Midnight Krasnog will close his shop and show up into the back room. (You have to do that whole thing where you wait for Krasnog (town mage) to leave his shop at midnight). You can wait in the back room for him he will walk in, and is NOT aggro.
Kill mage
Note: Don’t need to get the last hit, just need to be there when he dies. Everyone in the group will most likely receive a thunder curse when Krasnog dies. He’ll usually hit with a curse of thunder, but that can easily be removed by quitting and relogging.
Go back to the Assasin at the The Rusty Nail bar to practice camouflage.