Overview
There are some requirements to do this but other than that its rather simple.
Disclaimer
You need to be able to do Special Missions and have Monkey Ace 4/2 and Monkey village 0/3
This is much easier if you have “Bigger Beacons”, “Double Cash Mode” and have a highly upgraded “Starting Cash”, but it is not a necessity.
Tutorial
Start the Special Mission “No Escape” (Farthest to the right)
Place some offensive towers along the track to earn enough Cash for the Monkey Ace
Place the Monkey Ace at the top of the circle inside the track loop
Upgrade the Monkey Ace to 2/X and set its path to circle and then save money for a Monkey Village
Place the Monkey Village so its range reaches the Monkey Ace(s)
If you Dont have “Bigger Beacons” place the Monkey Village outside of the loop so that the Village houses more Aces.
Keep adding more Villages and Aces untill you survive all 13 Rounds.
Good Luck!