I couldn't stop laughing when Em and I was nearing a checkpoint and BANG!! Ada got away. Although I was pissed at first, it was hilarious towards the end.
Also, FUBAR is bad, but the thing is, use Lugo and Adams to take down enemies. There were some sections where all I had to do was take cover and order my squad to take out all the enemies, then just walk through the funeral of what bodies were left