Bug report: Played the game once, saved, quit, and then when I came back, it wouldn't let me load the game -- rather, it's in a weird graphical mode where it is cycling through every single map background -- almost like the .swf is "playing" all of the frames used for the backgrounds. Tried to reload a couple of times, with the same result. Looks like several other people in the thread here are having the same problem, but for some reason they're voted down quite a bit. Hopefully the developers can see one of the reports and fix the problem.
15 gold stars.
Never underestimate the power of the humble nail gunner.
For day 3, I never went above 3 or 4 flamers, and continued until I got a solid line of nailgunners behind them.
For day 4, I focused primarily on imploders, but eventually built up my solid line of nailgunners behind them as well (along with a fair number of flares as well).
For day 5, I built my solid line of nail gunners first, and then added on a half-line of flares behind it with 3 supporting fuels, and then began replacing nail gunners with imploders -- eventually working my way to completely replace my solid line of nail gunners with a solid line of imploders (except for 2 I couldn't afford). This worked great without support powers all the way up until the last stage, where I spammed repulse and augmented with the ship's cannon.
Was *just* on the edge of giving up and looking up spoilers, but stuck with it and figured it out. Top notch game!!!
Two (non-spoiler) hints for people -- make sure you turn out the light so you can see what you're doing (I'd already solved one game before I realized this), and make sure you get the posters!
 "Hands of War 2"){kind=icon}
 "Desert Moon"){kind=icon}
 "Hidden Objects-Snow White"){kind=icon}
 "Casual Gameplay Escape"){kind=icon}