Does anyone know the steps you need to kill the assassin. i have slipped the perfume from Crock on the dummy trap, and the rapax is stalking on the other side of the glass door..how do I open the door? Ihave found all the red light green light machines but nothing works...help

Okay. Here goes. BEFORE you put the perfume on the dummy, you need to open the outer glass door, so he can walk in. Then put the perfume on the dummy. Make sure both lights in the righthand chamber are green, and the inner door is closed. When you see him enter the chamber, click on both green lights to "lock" the doors. Then go to the lefthand chamber and pull the lever. Rapax Pate'! :D

Thanks but i went around and killed him myself...will this cause problems, because I have yet to figure out how to get in to east castle complex where i believe the idol is

No, it shouldn't cause any problems if the T'rang aknowledged it. You need to go through the mines to get into that part of the castle.