Welcome to the BloonsGuide.com walkthrough for today's (November 28th, 2023) Bloons TD 6 Advanced Challenge: "ISAB I Hope This is Hard"!
In this short guide, you'll learn how to beat the Advanced Challenge, and you'll better understand why this strategy works.
Let's get started.
The Solution
The Tower we're going to use to solve this challenge is the Wizard Monkey.

Hurls magical bolts of energy at the Bloons. Can upgrade to a variety of powerful spells.

$320
To easily handle today's Advanced Challenge, place a Wizard Monkey in the middle of the map under the main pathway and upgrade it to 0 / 3 / 2, or Dragon's Breath on the top path and Monkey Sense in the bottom path.
The combination of the Wall of Fire and Dragon's Breath fire should easily take out the all the Bloons as they funnel into the middle of the map.
Why does this work?
One of the main benefits of the Wizard Monkey on this map is the map itself.
Although this map has many pathways to start, all bloons are ultimately funneled into a single point. This provides a great opportunity to use skills that hit the track, like Wall of Fire - or even an Engineer trap in the bottom path - as the skill is guaranteed to hit each Bloon.
When you combine Wall of Fire with Dragon's Breath, moreover, the damage is increased even further.
Wall of Fire
The Wizard Monkey's Wall of Fire ability is perfect for this. Since the Wizard is in the center of the map, it will always place the Wall of Fire on a point that all Bloons are forced to travel through.
Moreover, the Wizard's Dragon Breath ability also buffs Wall of Fire. From the Wiki:
"Rapidly spews flames at bloons. Flames deal 2 damage and sets affected bloons on fire for more damage. Fireball deals 9 damage and 14 blast radius, Wall of Fire spawns every 4.5s and gains +10 pierce, and increases tick rate of Wall of Fire."
Dragon's Breath
By default, the Wizard's range with Dragon's Breath is quite short.
When all the Bloons are forced to funnel into the center of the map - and we're able to place the Wizard near that center - the Wizard Monkey has plenty of time to attack with Dragon's Breath to kill or weaken Bloons before they hit our WOF. The ability will light and Bloons on fire for more damage - and when combined with the buffed Fireball damage and blast radius, Bloons melt away.
These two abilities will make short work of the Advanced Challenge for November 28th, 2023!
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Thanks for reading, and happy popping.