Attempting a Black Border Run in BTD6 Mid Collection Event!

NK blessed us with another collection event even though it's not even been that long since the Easter one! While looking through my boosted maps, I noticed one that looked quite fitting for a C.H.I.M.P.S. 'black border' attempt. You get a black border around a map for beating it on that difficulty all in one sitting, so no quitting to home or using the retry last round button to save you!