Even if the lich complained in an aggrieved voice, it wasn't as if it was able to do anything.
That was because it had been completely suppressed by everything that was thrown at it.
The dark energy that surrounded it became weaker and weaker until it completely disappeared and once that happened, the lich had no more defenses left against the attacks that were raining down on it.
With the attacks shattering the bone that made up the lich's body, it really wasn't able to do a single thing against the attacks that rained down on it.
So the lich was taken out by the combination of everyone's might and a bit of divine intervention.
The moment that the lich collapsed, it seemed that the undead horde froze as if they had lost the one thing that was connecting them. It was as if the brain for the undead horde was suddenly cut off and they weren't able to do a single thing.
But at the same time, I fell down onto my four limbs on Joan's back.