With all the arguments here is think I might be able to answer a few of these. I might be totally wrong and I'm OK with that. When a Titan uses FOH it sends lightning up in the air, not sure how high but I just count myself dead. For the being on the ground there is a perk ( can't remember what it is called) that sends a wave straight ahead. The shotgun hit means he has unstoppable on. Unstoppable plus the maxed out armor stat can be a real pain in the butt. With this info though I have been able to set up a good strategy to deal with FOH titans. Hope this helps.