I've worked hours and hours and yes, I've finally got artifact 19!!!
It is exactly what it's cracked up to be.
The weapon is just pure Bad ass in a barrel!
It charges up-doesn't take ammo.
Can shoot through walls.
Completely eliminates all enemies on screen.
Leaving you with only the bloody mess to clean up.

This is my screen shot of me with it.

If You Want A Better Look Here is The URL