If you want easy game
Just wait until marksman and AA soldiers are aviable and unlock only them
Grenadiers are nerly auseless even with RoF buff as you cant dodge and kill with them
I am confused is this before or after original game storyline ?
Shields sugest before, so it means you will loose in the end :)
I bought and played original game and I wonder.
Or even easier to win on Hard [not sure on insane] is just wait for Preachers to show up
Than send your dream team you trained on easy to crush them in 10 turns for fast victory :)
Hard badge is actually really easy
Just start game on Easy bulid your Dream team of Heroes
All 5 should have 10 fight, build, research, scavenge, leadership
Also research anti venom on easy to make them immune to zombie bite
With that even Insane is easy [easiest is go to Cure ending]
LightningLord
Nothing New
Btw its easier to just get all treasures you can and go deeper [than around lvl 10 juest equip everything u got so far and start play reguraly ^^]