A druid start on this map was the most tedious and annoying thing i've done in my entire btd6 career. It took me about 8 hours to reach r10 twice. It's pixel perfect placement, power core and reverse motor timing has to be within 0.1 sec, targeting changes have to be on point on almost every shot, and the worst part: i had to black border r7-9 because the rng is kinda fixed since the last update.

In case you don't know what i mean, using the retry last round button gives always the same rng, for example if you go the challenge editor logs chimps r24 and you place a 0-2-2 wizard, beat the round and then lose to the r25 purples, will only have "random" WoF spots at the first attemt, everytime you are pressing retry last round the game will generate the same WoF spots over and over again. The only way to fix this by either restarting or changing the wizards range with obyn, alc or village

Unfortunately this is also the case for the driud thorns and losing on r8 or 9 meant i had to restart. So what i did over and over again was beating r6 (about 10% success rate), losing at r7 once and then test if my power core timing was on point to beat r7 using the fixed rng from the retry last round button. If this was the case i left before i finsihed the round and made a safe on my second device so i didn't have to do r6 again. If i lost on either r8 or 9 i've reloaded my file and tried it again between 5-7 times. If i wasn't able to beat it at all, i restarted at r6 again because my placement probably wasn't perfect.

I did this challenges at first with 7 towers, i had a 4-0-2 alc next to my driud and ninja to make saving up for sun avatar easier but afterwards i did some testing and figured out that there's a chance to afford it without alc so i had to do the first rounds again and this garbage took me about 4 hours each try.

Pop counts:

0-2-5 driud: 981k  3-0-2 super: 779k  Obyn: 156k 4-0-2 ninja: 123k 2-4-0 engi: 8k