Bloons TD 6 - Town Center Black Border C.H.I.M.P.S. Clear + Axis of Havoc Achievement

Woah, this isn't Mega Man.
I figured I'd record my C.H.I.M.P.S. clears on any map I manage to do them on as I'm currently playing this game a lot on the side.

C.H.I.M.P.S. is the hardest difficulty in BTD6. The abbreviation stands for "No Continues, Hearts Lost, Income, Monkey Knowledge, Powers, or Selling."
That is:
You may not freely retry rounds at the cost of Monkey Money*
You may not leak a single bloon
It is impossible to gain any extra income. Farms don't exist, active abilities that generate money cannot be used. Villages cannot be upgraded to x-x-3/x-x-4/x-x-5.
Monkey Knowledge (an extra skill point tree that enhances Towers) is completely disabled
Powers, items you can use to wipe the screen or help in other ways, or place pre-upgraded Monkeys for free, are unusable
No Towers can be sold. Once something is placed, it'll be there forever.

*In C.H.I.M.P.S. specifically, it is possible to freely retry rounds at no cost. However, doing so will give you a red medal on the map select screen and a golden border for the stage. If the mode is cleared without needing to retry, you instead gain a black medal and a black border, the highest form of clearing a map.

Town Center is the currently 6th Beginner Map of the game and consists of a relatively simple, close-knit track with some buildings to block vision.
Although the map technically has water, it's not very useful as it's very far away from the main track and would only be of use to Boats at 4-x-x or 5-x-x, plus it puts them out of range of a central village.

Axis of Havoc is an achievement that requires you do beat a game of C.H.I.M.P.S. with one of each Tier 5 Sniper, 5-x-x, x-5-x and x-x-5.

I opt to do a Sauda start this time, cheesy as it is. Sauda is a ridiculously good hero that can see Camo by default, attacks really fast and has busted abilties, all the for the low price of 650 Gold. And being a hero, she levels up as the game progresses. I'm doing this since we are going for a very expensive collection of T5s for the Axis of Havoc achievement later.

I give Sauda a 1-1-0 Druid and a 2-0-2 Glue as support (in hindsight I should've gone middle path to crosspath Glue) and start building up two villages to x-x-2. This gives a 20% discount to the upgrades lower than Tier 4 of all towers placed in the range of these villages, which will be essential for the Snipers later.
It also has the handy benefit of signifcantly lowering the cost of a 2-3-0 Village.

I start building the first Sniper to 3-0-2 to prepare for Round 40 and start settling on a solid defense around Round 50 with a 1-4-0 Druid, a 2-0-3 Glue and a 4-0-2 Sniper. Then it's time to save up for a 1-5-0 Druid and 2-3-0 Village to cover the remaining rounds until 100 (it's that busted), and then I buy the rest of the Snipers. First I upgrade the 4-0-2 to 5-0-2 to help with DDTs / Round 100.
An x-x-5 Sniper is actually a very good tower with a high fire rate and good damage. An x-5-x is probably one of the worst towers to ever exist and especially awful in this mode where Supply Drop does literally nothing.
Nonetheless, you can afford all 3 by Round 100, and the 5-0-2 Sniper and 1-5-0 Druid solo everything.

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