medal exists in the game, it cannot be obtained normally as the player cannot leave a Co-Op game and come back, meaning that the players who complete C.H.I.M.P.S. on Co-Op will always get the black medal. All of the maps have been solved on Co-Op C.H.I.M.P.S....
a resulting filename could be: high_finance#hard#2560x1440#noMK#noLLwMK.btd6 for a playthrough of high finance on hard with no monkey knowledge required and no lives lost when using arbitrary monkey knowledge (probably mana lives or free roadspikes)...