In Rohan, the best tanking class is the Human Defender which have a large assortment of defensive buffs and HP. They are very useful in group pvp with the use of their AoE stun. And you must make good use of your mana pool and wait for pot cool downs as the high casting requirements.
Stat build
As the points are a higher priority elsewhere, this build has low strength compared to other melee types of classes(Rohan Crone). You are able to use more spells with the larger mana pool without worrying about being up against that mana cool down, since a decent portion of Pyche have been distributed. Most of the points are in VIT so that you have plenty of hit points to withstand some beating and some added defense.
PvE
Soloing is pretty easy for a defender because they can take a lot of hits and stun mobs. Here we provide you the Rohan powerleveling, just have a look. However compared to other builds and classes, they lack true firepower to kill them quickly. Defender is intended to shine brightly in party grinding or boss hunting. And they are very tough to kill, as they have great party buffs and a Healer at their disposal. They are one of the top choices for boss hunting parties and high level mob grinding, they can also make a huge difference in survivability when the party is being mobbed bad. They can use the AoE stun that the party can have a breather.
PvP
This build will have a harder time providing the basic fire power to dispatch opponents, but they will have a tough time killing you too. With high defense and HP stats you have be tactical in 1v1 pvp. A good trick is to wait till your enemies health bar get a little below half way, if they let it get that far,and then start spamming your stuns on them so they can't pot. They excel in group PvP though, with great party buffs and AoE stun can leave enemies sitting ducks so that damage dealers can quickly slaughter them.