This is true until you try other things. E.g. I found that if I got attached to units, I tended to be worse off in later scenarios. If you're continuously devel

This is true until you try other things. E.g. I found that if I got attached to units, I tended to be worse off in later scenarios. If you're continuously developing lots of units you always have opportunities to level up & get automatic healing, for example. Of course I say this having never tried anything harder than the medium difficulty setting.