Please give me a guide for Promotion Exam 9-3 ㅠㅠ

I beat it by stacking 2-3 'Drifters', keeping them alive with 'High-Capacity' units, and accumulating damage with units like 'Delivery' or 'Phono'. Instead of 'Phono', if you're using regular units, 'Anti-Alien' units with 'Damage Reduction' or 'Bonus Damage' would be good. Professor. I summoned mine right after beating 'Star Alien', and it worked. Yes. Good luck! (If you're still having trouble, I recommend checking a guide. Bow)

I just need to use a lot of Cannonball and Chronos High Defense.

I remember Gobang as an important stage.

This is how I carried it.

I cleared it with Great Light Mohawk, Amigo, Great Light Wall, Cat Eraser, Jiangshi, Kankan, Drift (3rd form), Merara (I brought the 2nd form, but the 3rd form is fine too), Kakum, and Black Cyclops. Black Cyclops is for killing the teacher with a heatwave, so you can bring another unit with a wide range instead of Black Cyclops.

I have this much Shre.

I have this many super rare cats! ^^