If I put into play an Eant character with A Very Good Tale, do they still enter exhausted?

Is an enemy that is "immune to player card effects" also immune to feint?

Can I discard cards to bolster my defender with Protector of Lorien after flipping tne shadow card?

Thanks!

Yes, yes, and yes.

One more question: Is there an action window to use Ride to Ruin on an Escort from Endoras that was commited to the quest after the quest resolution phase?

No, because Escort from Edoras gets discarded immediately after the quest resolves. There is an action window after that during the quest phase, but he doesn't survive long enough to use Ride to Ruin.

Ok, thanks.

Yet another question: a location is considered explored whenever it has enough progress tokens, regardless it being an active location or not, right? So if I use Asfaloth to explore a location, it is considered explored and all effects that trigger after being explored, do so normally. My fellow players insisted that effects that trigger on the location being explored activate only if it is an active location (they claimed that locations in the staging area with enough progress are considered discarded, not explored).

You're correct, a location is considered 'explored' once it has progress equal to its quest points (unless some other effect prevents it from leaving play). It doesn't need to be the active location.

Thank you.