Iron rain tip
The iron league is really easy to win people.
Get away from your tech and stop twin harvesters at the start. This game is won on a lower level. Quick decisive attacks would win every time. if you roll out 2 harvesters I can easily take them out take the money and then destroy you.
Rifleman, flamethrowers, laser men, buggies, pitbulls, and maybe mutants if you got them. Those items will win every time just about. I have two buildings in my deck infantry and vehicles. That's all I play with and I relish the sight of 2 harvesters when I first spy the field.
Don't waste your time with anything else. Trust me just learn the lower end fighting and it actually gets pretty comical. you see these guys scrambling to try to keep up and they have absolutely no idea how to play the game. that's only because they don't have their check to spam and let the game just win because they overpower you. Iron rain is nothing but skill.