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I just got my butt kicked playing the Light-Bringer mission "Death From Above". I played this last week and nearly completed the bonus objective to destroy all enemy strongholds within 15 minutes or whatever. I was about a minute short. I just played the mission again now and the bonus objective had only 2 minutes left and I hadn't destroyed any strongholds. Does the ai improve as you unlock better load-outs? I was just sure that I was kicking butt on this mission last week, on normal. I'm also stuck with the final mission probably because I attack down the long bridge where all the enemy units are.