Mo Heroes, Mo Problems

Mo Heroes, Mo Problems is a hidden achievement in Bloons TD6 introduced in update 20.0. It is earned by completing an Odyssey of any difficulty without using Heroes. The prize for the achievement is 3 tier 1 Insta-Monkeys.

Summary
Bring no hero and play on the easiest Odyssey possible. Use standard defenses to help beat Easy Odyssey.

Tips

 * Ensure that you do not have a hero in the hero ship slot. Bringing a hero but not using them will not earn you the achievement.
 * The difficulty of the Odyssey does not matter. To complete it quickly, play on the Easy difficulty.
 * Completing Odysseys that does not allow heroes at all will automatically grant this achievement upon completion, as first shown in the week 19 Hard Odyssey.

Trivia

 * The Achievement Title is a parody reference to the 1997 Notorious B.I.G. classic "Mo Money Mo Problems" (feat. Ma$e and Puff Daddy).
 * This achievement was introduced on September 1st 2020, but could not be earned until September 3rd 2020, due to the 20.0 update being released during a time gap between Odysseys.