How do you complete the farm yard challenge on bloons TD 4? - Answers

First you have to notice which path the MOAB takes. Then once you've beaten level 59, erase all of your towers and line the OPPOSITE PATH THE MOAB TOOK with fully upgraded tac shooters and buy a fully upgraded monkey beacon with some spike factories towards the end of the path. Be sure to leave yourself some money to use to the monkey storm. As the round goes, you need to use the explosive pineapples on the track in front of the BFB. once you think the time is right, use the monkey storm (if you don't have enough money just delete some of the towers at the beginning of the path). I also had 7 banana republics and a bunch of lives, but i didn't lose any of them.