Here is the full list of all 13 My NAUGHTY Shotgun achievements.
I wonder what is inside
So much killings
You surely know how to patch yourself
The reaper is your friend
It probably wasn't worth it
You better not stand on it
To the ashes!
Kill those demons!
There is a first time for everything
It was about time
He deserved it
You got your first blood
Back to the ground with you!