Fairly standard 30 ft speed?
They use normal PC class rules, so I think we can safely assume they have average humanoid stats in most respects. Apart from 60' infravision (= darkvision?), the only other special abilities they possess are a Headbutt and Goat Magic. We can modify the Goatman's Ram for the former, and we decided to interpret the latter as SLAs.
The
Savage Coast Monstrous Compendium Goatman had AC 5, so I'd give them armour that provides equivalent protection.
Something like:
Speed: 30 ft. (6 squares)
Armor Class: 15 (+4 chain shirt, +1 small wooden shield) touch 10, flat-footed 15
Base Attack/Grapple: +3/+4
Attack: Weapon +4 melee (???) or gore +4 melee (1d6+1)
Full Attack: Weapon +4 melee (???) and gore -1 melee (1d6)
Space/Reach: 5 ft./5 ft.
Special Attacks: Discerp, empowerment, goat magic, ram
Special Qualities: Darkvision 60 ft.
Saves: Fort +3, Ref +3, Will +2
Abilities: Str 12, Dex 11, Con 11, Int 12, Wis 8, Cha 9
Skills: 9 skills at 6 ranks
Feats: 2 feats
Environment: Any mountains ?
Organization: Solitary, gang (2-4), or party (5-10) ?
Challenge Rating: 3 ?
Treasure: Standard ?
Alignment: Always chaotic ?
Advancement: By character class ?
Level Adjustment: Pretty high. They are written as a PC class, so "—" seems inappropriate, but their special abilities would be pretty potent in a PCs hands. I'd guess somewhere around +4 or so?
Ram (Ex): If a goatling hits with a gore attack as part of a charge, it deals double damage (2d6+2) and can attempt to bull rush the opponent as a free action without provoking an attack of opportunity. The goatling gets a +2 racial bonus on the bull rush's opposed Strength check, giving a typical goatling's ram attack a +3 check modifier.