It took a while, but I realized that you don't want to be in the black, the dice only give 5 points while if you're in normal mode each dice is 10 points so it's better to stay a little in the white rather than get into the black.
Finished the campaign, my personal setup was using a maxed out space laser and switchting to machine gun to kill the suicide trucks. My turrets were a maxed out missle turrent and 2 laser towers, I also ended up with 115 gunmen and 59 Repairmen. It really wasn't too bad once I got the laser turret life never really dipped below 400 (out of 600). I started with flamethrower and then added missle turrets above and below then later removed flamethrower for laser and then further the bottom missle for a laser, once you start stockpiling lots of gunmen, the missle turrets aren't much use anymore though they do help with the tanks somewhat later. It's pretty much just chain spam laser as well as picking a good location for it. Good luck
It'd be more interesting if there was some sort of goal to it...you can also just stand on the right and just spam a and never get hit, a nice start but it needs a good deal of work still.
Wow...a game that forces you to use magic, but doesn't give you a default magic makes it the most retarded game ever...if you don't pick up a spell you automatically lose....great planning retard developer -_-