[quote name='enlightenedgamer']Also, I think Ashley was immune to your weapons in RE4 (bullets for sure, maybe not explosives). Her AI is smart enough, though, that I didn't notice until my 2nd time through. I was up on the second floor when the cult members were carrying her away, and I totally put a rifle round through her calf. Later, I tested her with shotgun blast. Not a scratch. Even without partial invincibility, she is definitely one of the best game VIPs to escort.
It definitely comes down to AI. Or, at the very least, predictability. Farah in PoP:SOT wasn't too bad because the bad guys were slow and she was slow. It did feel dumb that she would just stand still and take scimitar blades to the face, but at least I knew what I had to do and the game never really screwed me over.
Making escorts secondary objectives doesn't really help, because I always end up trying for those anyway. If it's optional and frustrating, it's still frustrating.[/QUOTE]
She wasn't immune, I shot her several times on purpose and killed her. The round through the calf could have easily been the collision detection picking up the Ganados instead of her. The Shotgun blast, you must have missed her.
Making her invincible would be idiotic. Just make her killable and smart.