Oh my god.
I made it to wave 50 when suddenly the enemy AT gun directly hit my bunker and killed almost everyone.
Then naval artillery finished off the rest of the men.
Guys, I'm stuck on level 20 wave 2.
I have 20 of the 200mm cannons armored with depleted uranium, and I'm producing nukes at a pretty steady rate. I also have like 60 giant gatling gun turrets. The stealth death bombers keep getting me though. Help?