Beat last primary mission. Beat all secondary missions but "Too much boss..." That mission is bugged. I killed all bosses two separate times now and my units run in place at the right end of the level.
Everyone complaining about it being CPU demanding is wrong, its just laggy. I am running on Chrome 9.+ and it utilizes hardware acceleration for flash and the entire web experience. I am running a i7 920 overclocked to 4.0 Ghz and a ATI 5970, there is no way a little flash game should be laggy. It is just poor coding on some parts of this game simple as that. Fun game none the less.
Bazooka + Pierce + Explode seemed to work best. Shields are also great. Get these ASAP and its a win.
Still not sure what if anything Power and Speed do....