Hellknight CentaurCreature 4
Source Pathfinder Blog
Perception +11 (darkvision)
Languages Common, Diabolic, Elven
Skills Athletics +13, Diplomacy +8, Intimidation +8, Nature +9, Survival +9
Str +0, Dex +0, Con +0, Int +0, Wis +0, Cha +0
AC 23; Fort +10; Reflex +11; Will +11;
HP 55
Speed 35 feet
Resistances Mental 2, Slashing 2
Hoof
+11 (+7, +3) to hit (agile) 1d10+6 BludgeoningHalberd
+13 (+8, +3) to hit (reach, versatile p) 1d8+6 SlashingSpear
+11 (+6, +1) to hit (thrown 20) 1d6+6 PiercingTrample

Medium or smaller, hoof, DC 20 reflex
The monster Strides up to double its Speed and can move through the spaces of creatures of the listed size, Trampling each creature whose space it enters. The monster can attempt to Trample the same creature only once in a single use of Trample. The monster deals the damage of the listed Strike, but trampled creatures can attempt a basic Reflex save at the listed DC (no damage on a critical success, half damage on a success, double damage on a critical failure).
Traits
A rules element with this trait is one-of-a-kind. The DC of Recall Knowledge checks related to creatures with this trait is increased by 10.
BeastA creature similar to an animal but with an Intelligence modifier of –3 or higher is usually a beast. Unlike an animal, a beast might be able to speak and reason.