This was tested on Easy. May only work on Easy. 1. Build a Monkey Apprentice in the middle and upgrade (1-2) 2. Glue Gunner - (2-1) - above the exit 3. Dart Monkey - (2-2) - top-left loop 4. Monkey Buccaneer - (3-2) - water on top-right loop 5. Upgrade Apprentice to (2-2). 6. Spike Factory - (2-2) - above the exit 7. Upgrade Glue Gunner to (3-1) 8. Upgrade Apprentice to (2-3). 9. Upgrade Dart Monkey to (4-2). 10. Ninja Monkey - (4-2) - bottom-left loop 11. Bomb Tower - (2-3) - bottom 12. Super Monkey - (1-2) - bottom right 13. Freeplay - Keep upgrading towers and adding new ones.