Swarm Assault Level 63 - Arena

Not a tough level. Get the right strategy and you win.
You have just the ant colony while your enemies have spider, scorpion and wasp. Manage to salvabe as may troopers as you can in the initial melee.. Pull them a little close to the protection of the base colony.. maybe not too much because they can't attack while walking. Anyway, make sure you've saved both missiles and 1-2 snipers. Keep them safe from attack initially, and then from neutrals (bombers and black ants).
Now, start production on bull ants, you don't need bazookas as enemies and their colonies are too superior for bazookas' range. I remember in my early attempts, I tried attacking the wasp colony and taking it down successfully, but the problem was that by now, the spiders had occupied the scorpion colony and the Reds had become not too powerful. So the right strategy seemed to be to go for the spider colony. When I tried to do it with the 2 missiles, they quickly got killed by the snipers (trying to kill off snipers didn't work as missile attacks are not continuous and by the time the missiles hit them, my missiles were down. So we have wait.. while the ant colony base gets overrun by bull ants fending off black ants. Once there are enough spiders, they'll start marching to the scorpion colony attack. I had by now, marked the missiles by Ctrl+1, so I could quickly select them by pressing 1. So as soon as the spiders moved to attack mode, I moved a bunch of my forces half way to the spider colony; selected the marked missiles using "Press 1" and got the 2 to attack the spider colony. The snipers coming out simply went up to the scorpion colony attack. The spider colony popped; I swarmed in with my forces and occupied it. By now, the snipers were coming back from successfully conquering the scorpion colony; and were getting slaughtered by my forces waiting back home.Now, I used the same missiles (with other forces standing guard) to quickly bring down the low-health scorpion colony. And the rest was too easy.