Answer:
When can someone truthfully tell someone βwell doneβ but think they did a bad job?
A skin have I, more eyes than one. I can be very nice when I am done.
I cut through evil like a double edged sword, and chaos flees at my approach. Balance I single-handedly upraise, through battles fought with heart and mind, instead of with my gaze.
Long and slinky like a trout, never sings till it's guts come out.
What has a big mouth, yet never speaks?
What never gets any wetter no matter how hard it rains?