This forum is IC only!!! Just like the World threads, even though the things that happen here do not affect the World threads unless you want them to. That's what's so great about this place. If you lose, and your character dies, it doesn't mean your character is dead in the World threads and you may continue playing them there---you can even battle again in the Arena with that same character.

There are some rules to combat. They (small though that paragraph was) are posted with the general forum rules, but here they are again now, since they apply here too.

"When battles occur, this rule always applies:
you may not take control of another player’s character—only your own.
This applies even out of battles. Your control over your attack stops
at the tip of the other character’s nose. They choose how to handle it
from there as long as their actions also stop at the tip of your
character’s nose. That’s how it goes. Also, no auto hits. An example of
an auto hit: Jim smacks Joe in the face. An example of how to write it
better: Jim attempts to smack Joe in the face.

That really should be all the explaining necessary for this."

I lied, there. It's not all. I would like to add for the sake of fairness that you can't just go around dodging every single hit your opponent throws at you. Try to write it so that it's fun and interesting for everyone. Combatants and Spectators alike.
On the same coin, but the other side... It's not usually very fun for your opponent if you keep making the allmighty unavoidable impossible to block or defend against attack. Especially if it's going to kill their character in one go. It's also not feasable that a Player-character could have such abilities, anyway.

If you feel your opponent is being unfair, talk to them about it and ask them to make an alteration or two. But whatever you do, be a good sport. If you win a battle, it's an empty victory if nobody had fun.

Be the one that everyone wants to interact with.

If I need to, I'll add more guidelines later as issues pop up, which I'm sure they will.

Have fun!