How to Beat Mission 29 Without Having a Stroke

Rush to the Anti-Air Gun about 10 o'clock from Code Talker (you can leave him safely at the chopper)
The AA Gun can shred through a skull before they start trying to target it, so protect the gun by leading the skulls away up the nearby building.


Now you have an S-Rank for this mission pain-free!

Just use rocket launcher with NVG on skulls, leave the AA gun alone at the mansion to shoot down the helicopter after you pick up codetalker. Also D-Walker is great for clearing the end quickly, leave him just before you go into the mansion hiding behind the rocks

all you have to do is run past the soldiers and run straight to the north landing zone against the waterfall, if you do that you wont be spotted at the all. took me two tries, didnt even have to fire a gun.