What do you think was the hardest battle in the game.
I would say the Battle on the cargo part on the Cruise Ship. You have to kill all the guys and then a LMG Brute jumps down and he's relentless and regular guys still spawn. He takes so many bullets, just charges after you and can mow you down in a second. At least he only throws flash grenades.
I think all I had was a KAL-7, Para, and occasional grenades dropped.