I'm just generally wondering how does one go about making an existing actor a brain.
I'm also wondering how to make an actor's armor tougher/more resistant to damage.

Here:

AddToGroup = Brains

this should work as a general rule.


As for the second, this is done through materials, and then using them as such:


AddEffect = MOSRotating
PresetName = Dummy Rib Cage Gib A
Mass = 26.77
HitsMOs = 0
GetsHitByMOs = 1
SpriteFile = ContentFile
FilePath = Dummy.rte/Actors/Dummy/RibCageGibA.bmp
FrameCount = 1
SpriteOffset = Vector
X = -3
Y = -10
AngularVel = 6
EntryWound = AEmitter
CopyOf = Wound Bone Entry
ExitWound = AEmitter
CopyOf = Wound Bone Exit
AtomGroup = AtomGroup
AutoGenerate = 1
Material = Material
CopyOf = Civilian Stuff
Resolution = 4
Depth = 0
DeepCheck = 0
GibImpulseLimit = 85
GibWoundLimit = 3
GibSound = Sound
CopyOf = Bone Crack

Yup, adding it to the Brains group is enough to make an actor a Brain.

As for armour/etc. you have to mess with materials - the most important value is the material's StructuralIntegrity. I think an SI of around 500-600 will deflect basic AK rounds; the super-material used for the 40K recomp storm shields has an SI of 12,000 to make it immune to most weapons. Also stuff like the GibWoundLimit and such.

Thanks, guys.