dont expect to save all/most (
![icon_cry :cry:](./images/smilies/icon_cry.gif)
) of the ghouls, but you should first run to the southern "branch" (as you call it) and destroy the incoming muties, then forget about the dug in muties that didnt rush, now get your ass over to the west branch, and kill all the (mostly melee, iirc) muties that run in. the north branch is best left alone, there are mines that blow up most of the exclucively melee muties, and whats not killed by that is easyily killed by the ghouls.
i found it best to (after stoping the initial rush/attack) start at the northern-most corner of the map and move in a counter clockwise fasion to wipe out the remaining muties (staying towards the outskirts of the biuldings will prevent ambushes/being surrounded) when you finish the "spiral" you should be at the eastern part of the ghoul base, and all that is left to do is secure the nuke.
im not sure if having too many ghouls killed during the mission will effect its outcome in a negative way (negative meaning you dont just get the nuke) but if you save enough you get the instructions to it or something, and general ?dekker is happy (if that really matters)
yea, have fun. soloing is hardest when it comes to this mission. most people break down and recruite 1-2 preople, at least, thats what ive read a few times.