Not sure how much of what I did the second time is important, but it worked so here's what I did for those who might see this later. I didn't talk to Tonn at the beginning and instead ran through the whole map killing enemies everything (except for two enemies)I ran counter clock-wise through the map (tower 3 then 2 then 1 in the order that you visit them "normally"). I swam from tower 3 to tower 2.The two enemies I didn't kill were the two krait that are in the water behind tower 3 as you approach it. They're just far enough out that you may not even notice them at first.At tower 1 I made sure to kill the small enemy "inside" the tower's base. You may not notice him until you get really close to the tower and then you can AOE to aggro him out.I then ran back to Tonn and did the escort normally; I tried not to get too far ahead of the group (might not matter). There are a few "new" enemies that pop back up during the escort, I just killed them as I came to them.When I got back to tower 3, the two krait who were behind the tower in the water before were now up on land. I killed them quickly before Tonn could bomb the tower.After the tower went down the "clear the beach" portion began almost instantly and I had no problems from then on.Good luck!
