The end of an Era has come. Magic is broken. New Heroes are needed to face the challenges of the new Age!
After he gets half way down, your undead sense goes off everywhere down there in the water....dozens of undead.
I can pinpoint location, so are these undead below the 5ft. of water, attached to the sides of the well, hovering in the air, or somewhere else?
They are moving around in the water at various depths.
Is there an area with a heavy concentration of undead? If so, I'd like to drop a grenade into that area.
The hole is only so big, so you have limited ability to direct it. In addition, you are not certain it will work under water. Those aside, you can do it and get a good size group of them.