Ntf1015 grab any sacred paladin blunt weapon you find, prepare it for Brahman runeword and try to roll a good stats to Mountain king and Bear stance. If its one handed you can invest to a shield of your choice too. I assume you've completed BRC so you have access to Blessed life. If so, change your %damage reduction items with High defense ones (like Kra runeword on armor). If you haven't done it already, go and grab some of the easiest charms (butcher, horazons focus, death projector etc..). If you haven't finished BRC, then make this your priority at this point.
About the playstyle for Tran Athulua, always have bear stance active. Always have Solar flare and Vindicate active. Switch to a +many skills item before buffing your character. You can even craft skill potions for this if you'd like. You will be using colloseum on Archers pack and switching to Divine Judgement. Always have your hoplites with you, because when you are blinking on a pack they get the arrows hits for you. Be careful when you are walking in front of your hoplites. You'll notice the swarm of arrows is hunting You now
. You can eat an apple before engaging also. I hope this helps.