This is a place to list levels of Pyro that you have aced, for us OCD completionists. The reason being I'm not sure which levels absolutly cannot be aced.
Aced - 1 thru 3 ][ 5 thru 9 ][ 12 thru 14 ][ 22 thru 25 ][ 27 ][ 29 ][ 31 thru 33 ][ 35, 36, 38 thru 40, and A, B, C and D.
Not aced - 4, 10, 15 thru 21, 26, 28, 30, 34 and 37.
If you want to ace one that I have aced, I will try to remember how it was done. I would appreciate similar advice for any you have aced that I have not.
I will update, if/when I ace any others.
I do honestly expect there are some that are impossible though.
