I'm struggling with Mission 13. Can anyone please provide me some tips/guidelines? Thanks!
I found the eastern camp to be the easiest to defend, so go there (take out west and north). Before you destroy your second camp, liberate the units on the map. The western prison can be cheesed with Ronny and a unit spotting for him from the fog.
Once the defense of the third camp begins, split your ranged units between cover bubbles and keep banshees as mobile stroke force. With 3-5 sqauds, using their charge together will wipe almost anything. Once you have Taldeer up, it's probably best to just rush for the gate, no point in sticking around.