There is also the "DefaultDamageTypesData.ini". This is where you can edit the damage, armor and recoil of the different ammo types you will come across.

For example you can change the tranquilizer damage to 100:

APGame.APDmgType_Traquilizer
BaseDamage=-100
ArmorPenetration=-100

There is also the "DefaultGame.ini". Here you can edit the perk unlock requirements so you can easier get their bonuses:

APGame.APRPG_AbilityManager; Accessed with Perk enumerations.

PerkAcquisitionRequiredCount[0]=25 ;Demolitions Expert - Kill this many enemies with Explosive Grenades.

If you want to get it for the first person you kill with a grenade you would do this:

PerkAcquisitionRequiredCount[0]=1
All you need to do is change the ={number here}