It's always been there and will be. Play Fallout 2.
But you said FOnline 2238 is not Fallout 2.
So, I dunno what was it doing there, but I was just running around Redding mine and went to this place and found... a tough alien... it seems after it respawns, it chases you even if you haven't seen it respawn. Uploaded with ImageShack.us
...2. Gecko (It's near Vault City, there are sometimes PKs, but you can make a deal with them (For example, you can give them 1 HQ ore and they let you go)...
Well, one guy tried to run away, I met him in this mine, he asked me about that PK standing in the exit, I told him I am gonna give him the share, he said he will try to run away. Result? I gave the PK 1 HQ ore and let me go, but he killed the other guy because he saw him running away. Harsh wasteland, eh?