Bah I got them all through on my first try. It was so obvious whom you had to choose for what task.
Am replaying now on Insanity to pump up my Shepards last three levels. Insanity isnt difficult its just imbalanced.
Consider this, my Shep cant kill one mech without emptying his clip, with warp ammo fully upgraded. By the time I kill one the others are already breathing down my neck. Biotics work, but only when their armor is gone, and they all have armor...
Doesn't matter anyway, three levels and I'm gone. I would replay the game again, but I cant suffer through planet scanning and the grindy bits.