I see all these posts about how people are stuck on the bombers + giants level. How?
The main strengths of Bombers + Giants is that it tricks some people. Other than that it's easy as hell, because the AI is just plain stupid.
The giants encourage people to gather their melee troops and rush the giant at once. Then the bombers (thanks to their area effect) can hit all your troops at once, and hey presto, you have nothing left.
Send one swordwrath out to the middle tower and hold. Why? This is so that it attracts the bombers (who actually do very low damage).
Bombers will automatically get drawn to it in their hordes. The AI doesn't realize it's a scapegoat and will send bombers to it, leaving your miners to frolic about in the beautiful sunshine.
Every time it seems like the next wave will kill it, send another swordwrath out (alternatively, send two swordwrath out and have the second as a backup, but make sure they stand far apart so the area effect damage of bombers is negated).
While all this is happening, mass up your economy. Then have fun devising all sorts of ways to beat the level!
For the lazy people though, an easy way to beat the level is to get 10 speartons, and as many archidons as possible. Have 5 spearton engage the giant at a time, whilst the other 5 lean back and do squat.
"But dude, isn't that wasting 5 speartons?"
No. Read the bold.