by not doing 150% missions lol. You should always take a soldier who has concealment abilities and scout with them. More than one usually so you can take various directions. Use Mods as well, such as stealth types etc. Vanilla LW2 is asking for trouble but try to keep missions at 200% infil as much as poss, Especially early on. Also it did win 'the most brutal mod of all time' award.

The problem with Pavonis Interactive is its members are desperate for the "hard game" title. Yea, they do a fine work, and LW has very interesting features, but in their desperation for making things too difficult (cause nowadays certain devs believe hard=better game, and normally they even don't do it in a balanced or fun way, just bringing hard gameplay for the sake of it) they make their mode a pain sometimes. I knew what i was getting into with LW2, as i finished LW 1 several times, but still, it's an unbalanced mess. It's like a drug: it hurts you, but certain moments make you return to it. Like a masochist