Swarm Assault Level 44 - Yin-Yang

A rather simple level. For a quick victory, don't bother with producing any missiles.. A better and neater way to quickly finish off the enemy is this. Start production on bull ants in both ant colonies, ladybugs in the Beetle colony, snipers in both spider colonies, and ninjas in the scorpion colony. Make sure to kill off incoming attackers using bull ants to the bottom (and then ladybugs/snipers once they're ready), and snipers and ninjas to the top. As for attack, I found it most efficient to go in with an army of bull ants and ladybugs (and a couple of snipers in the middle) and take down the scorpion colony and the spider colony behind it.. Bring in more snipers and ninjas (who were sentrying till now) along with new ants and ladybugs and take over the other spider colony also. The rest is too easy,

Swarm Assault Level 18 - Spiral

A pretty lengthy level. However, the first time I played this, I took a lot longer because I did not account for how quickly the seed ball plants can grow and spread if not weeded out at the earliest.
Well, just start production on Cannons, take existing cannons and others around the spiral conquering.. post cannons and groups of bazookas from conquered ant colonies as sentries to kill off seed balls as soon as they show up.. As for killing off the bull ants, I found cannons quite effective.. 4+ cannons in a row can easily kill off bull ants from a distance (unlike bazookas whose missiles keep missing the bull ants). Once you approach the spider colony overrun by the very quick black widows, you need a huge army to overwhelm them and take over the spider colony.. Bull ants in the front row could help will killing off the black widows.. but produce bull ants only towards the last moment from the closest ant colony because they make the seed ball situation much worse.. as getting close to a seed ball plant accelerates the spread of the plant.
I had made 2-3 mass migrations of cannons from time to time around the spiral while moving the army front.. just had to make sure they were not getting killed by seed balls.. hence the sentries everywhere.. In the final attack, I used a mix of bazookas and cannons only.. though I could've probably used  ladybugs also..

Swarm Assault Level 56 - Bomber Paradise

Not a very tough level.. though we look like we are heavily outmatched.. The Reds and Yellows both have scorpion, wasp and ant colonies.. whereas us Blues have just 2 Beetle colonies. I expected the central 2 scorpions to fight it out more.. but they were both going for the neutral ant colonies that we were interested in. I didn't really have much use of cannon.. The scorpions easily brought down the ant colonies... hence, I was heavy on ladybug production on both sides.. In both instances (left & right) of ant colony explosion, I swarmed in and started collecting seeds and killed off the scorpions.. Then the scorpions attacked again.. but with ladybugs, I kept re-obtaining the ant colonies.. From time to time, I was shutting down ladybug production so my beetle colonies won't pop from the bomber attacks. Anyway, when I had a good number of ladybugs on one side where the scorpion colony health was in the reds due to bomber attacks, I swarmed in and attacked the colony and popped it.. and occupied it.. defended it.. healed it.. started production on ninjas.. Also, attacked the other scorpion colony using ladybug swarm from both sides and took over. I then collected a few ninjas and took over the neutral wasp colony.
Now, the next step was to amass an army big enough to bring down both the spider colonies together (as they were within close firing range of each other's turrets). I kept up ladybugs and bull and production.. and also ordered ninjas.. and some time later, sonics. It was a bit of a challenge keeping the valuable alive due to bomber attacks.. But once I had enough numbers, I swarmed in on one spider colony (with bull ants and ladybugs in the front as cannon fodder), then the other spider colony.. occupied both by killing off incoming wasps from below.. Then, I tried to use ninjas on the ant colony, but they couldn't find a safe attack zone.. So I created a few snipers, but they were being paralyzed by wasps.. so eventually, I swarmed in and took over the ant colonies.. The final piece was just creating more sonics and taking over the 2 wasp colonies.

Swarm Assault Level 71 - Microcosm

Fairly easy level. I started production on ladybugs and bull ants in my Red colonies, and produced couple of missiles to attack the Yellow spider colony.. after this, I switched to snipers.. I took over the spider colony.. took a while to successfully defend the new colony.. had to bring down the neighboring wasp colony several times to fend off incoming attackers.. But eventually, it stabilized.. Then I went on to conquer everything using the snipers.. Colonies are highly unstable due to frequent aerial raids.

Swarm Assault Level 70 - X

Not a tough level. We are at an advantage here (same as the Greens) as the scorpion colonies are beyond the range of safe attack for the Blues and Yellows. The Greens would quickly bring down the scorpion colony from their side.. It would be mayhem in the center; but I just kept unit production up and stocked up for my raid. I produced bazookas (may later switch to bull ants for quick seed collection in the center), ladybugs, snipers and missiles (2 spider colonies). Then, I let the missiles attack the scorpion colony from my side.. swarmed in.. used some forces to collect and others to attack other scorpion colonies and enemies.. kept acquiring the popped & re-popped colonies.. also kept bringing in reinforcements from time to time.. after a while, my scorpion colony was picking up health and stabilizing.. I had established a good presence in the center.. with all other colonies mostly down.. and briefly turning Red.. I kept the presence up.. and brought in a battalion to the top right and went after the Yellows.. After one more reinforcement, the Yellows were mine.. Then went after the Greens as the Greens were in a strong position in the South.. Finally the Blues were quite easy.

Swarm Assault Level 74 - Crater

Farily easy level. Obvious thing to do is to produce ladybugs in the beetle colony shown in the pic, and cannons in the other one (to the right). The ladybugs would defend the colony against incoming wasp attacks from the 2 blue wasp colonies to the left. I let the cannons attack the red ant colony. However, there were 2 ways the Blue vs Red fight could proceed. If the Blues take over the Red spider colony, then they become too powerful (and I just restarted as the situation seemed hopeless). Usually, the Reds pop the Blue scorpion colony. In this case, I would easily (in time) taken over the Red and and beetle colonies. I would have ladybugs also along with cannons, protecting my territory. In my latest game, I brought in a swarm of ladybugs, bull ants and cannons and easily overwhelmed the scorpion colony defense (the spear attack is pretty slow). Once I had the scorpion colony up  and running, I had ninjas for protection. I placed one cannon in safe-attack position on the spider colony with ninjas standing guard... took over the spider colony.. The rest was pure pleasure.. just keep expanding..

Swarm Assault Level 76 - Amazing!

Fairly quick level. We have 4 units.. Just need to stay alive till all the Greens are dead.. Both my bottom units got killed too soon.. I just had the cannon and ladybug.. I kept both safe enough.. Slowly cleared path and moved the cannon towards the ladybug. Then I moved them around to protect from aerial attacks and kept them alive..