This is an issue I noticed already all over the place, and I suspect it's a bit a design feature, but specially in the new map, it shows that it is actually a bug.
Any enemy that is not on the same level as you, cannot be killed.
I was attacked from a rock by a sniper, shoot back and every damage I did, he immediatly returned to 100%
Any damage done with siege to enemies on a wall also same effect.
Balista attacks me, I return fire with Balista, yet enemy again returns to 100% immediatly.
Now, why is this an issue?
How are we suppose to take down enemies that are killing us from on top of a wall?
This is not how warfare works, Plus the benefit is one-sided.
This is silly, this needs to be fixed.
If they can Damage ME, then I should be able to damage THEM.
Plain and simple.