All of this ignore the Drinker's actual tactics. The Drinker wants knowledge first and foremost. It's entire shtick is to form rings of spionage abusing its Eye Drink ability on creatures around the field. In fact, the Drinker doesn't even engage in actual combat without spending literal
days studying its target. And because I'm so biased,
Here's the scan explaining it's behavior.
This gives the Hunter ample time to do... Whatever the **** it wants before and actual engagement begins.
Now here's the part I argue the creature's skills at using its personal abilities. But I think we both are tired of that.
Now then, being interested in watching the Hunter's abilities, the Drinker wouldn't immediately incap nor kill. And that's where the Hunter has an opportunity to strike. That's where it wincons comes true. You said yourself the Hunter bypasses forcefields, it can range spam at this point and keep gaining distance. The Hunter, if it's nearly anything as smart as a person with common sense, should be able to realize this creature it's toying with him, as it constantly sends ravens just to keep watch.
My argument? The Hunter has a chance to abuse the creatures initial mindset. However, as a creature well accustomed with fighting opponents with the Hunter's skill sets, it still retains a solid chance to give fight and win when finally taking it seriously and use its abilities.
I seriously ******* hope you told these people the actual info.