Is this a bug? I'm not seeing the point here - every time I try to leave I get called back to defend the Machine Shop, until eventually I'm overrun. Only way I can compete at that point is to knock out the guys in black first, but if there are two brown robed guys I can't kill them both once I'm out of 5.45x39mm & 9x19mm ammo. I get no AK ammo and damned little 9x19mm ammo from each wave and there's only one Clear Sky guy around, and each new wave does not deplete their squad strength, so eventually I'm reduced to pistol and shotgun ammo and I go down. Every wave has a couple of the guys in robes who are damned near immortal, takes almost a full magazine of AKM-74 or MP5A1 at point blank range to put one down. I've cleared out the Renegades, but they won't stop launching waves at the Machine Shop even though the faction map says they have been defeated.
Now I've loaded the Complete patch and I'm playing through on Veteran, and this thing is mind-numbingly hard. I never finished or even got very far into this game as it was too buggy, I found artifact collection to be annoyingly difficult, and several times I broke the scripting and was left with an empty land.
After I totally borked my Fallout New Vegas with The Rockwell Pursuit (great mod, just a mod too far on my rig) I've switched to S.T.A.L.K.E.R.