Damn, I'm stuck at the point where you set the map coordinates to kill the Gargantua. I set the target but can't get any form of acknowledgement for the fire. Not sure if I'm doing something wrong or it's a bug.
Even if I get it, not sure it will work. Gargantua follows you, so if I need to set it on him while he's wiggling the tower, if I try to climb or jump down he will move.