There is a "glitch" to walk past enemies. :P At least in AO anyway. I think you can do it in parts of AE too. It's more an exploit.
You simply have to stand on the edge of the screen and cross into the next screen just as the Slig or whatever crosses the screen too. They won't see you, or if they do, they'll shoot but won't hit you.
But every AO and AE player should know this. :P
|