Stage One
When the battle first begins, you’ll have a chance to face Rendain one-on-one. This is where you’ll learn all of his moves and get a feel for how to use the large arena to your advantage.
Rendain is a vicious melee fighter, much like Rath (who used to serve under Rendain). He has one ranged ability, though, which is what makes this fight challenging. He will summon these metallic dragons that seek you out and form a sort of steal cage while also dealing damage, stunning you, and removing your ability to use skills. Even worse, if it catches you mid-air, you’ll drop like a rock and get to watch your life counter drop down a notch.
Whenever you’re still for long enough, he will use a leap attack to close the distance. This is your opportunity to put the pain on him if you’re using a melee character. If you’re using someone ranged, you should never stop shooting him whenever you’re not bouncing around.
One thing to be aware of when fighting him one-on-one is the fact that his attacks have some serious knockback. If you’re standing in an open area with no wall anywhere behind you, Rendain can, and will, knock you off of the stage. While it’s easy to not die from damage, losing your last life simply because you fell can be very disheartening.
Once you get the boss down to around 50% health the fight will change and you’ll have to deal with Phase Two.