Anyways, this map is unlocked at rank 9. The map has 3 pools of liquid, the red blob is a popped red bloon, and the blue smudge at the top right is a deflated MOAB. The boss of this map is the P.R.I.N.T. The boss appears at round 130. Just... make sure you're ready. The start is at the middle left, and the end is at the bottom middle.