I'm the Boss

"Defeat a Tier 5 Elite Boss Bloon"

- BTD6 description

I'm the boss is an Achievement in BTD6, introduced in the 27.0 update. To earn the achievement, the player must pop a Tier 5 Boss in Elite mode.

Completing the achievement awards 250 and 2 Tier 5 Insta-Monkeys. The tier 5 monkeys are guaranteed to be a Dart Monkey and a Boomerang Monkey.

Strategy
Using the strategies used for beating Tier 5 Bosses is necessary. Bloonarius and Lych are the only bosses available, so use strategies for countering Elite Bloonarius or Elite Lych in preparation for finally beating the Tier 5's of these Elite Bosses.

In short, farm extremely hard and inflict as much anti-blimp damage as possible to the Boss Bloon currently available.