Compare your character to my Skallagrim character. While not a God he is capable of destroying a solar system with ease. If your character can do that you are a high tier character and that leaves you very few opponents. Me, Melon, and Rilla currently have characters at that level. Khan and a few others are capable of making characters at that level but unless you are competent fighting at that level is becomes boring quite fast. 

Other than that, survivability is iffy. The arena is a chess match, your character regardless of power level is matched against the other player and their character. You cannot win every fight, nor should you. You cannot lose every fight, nor should you. There are some days you simply face a character better able to defeat ytou while other days you are the predator to your prey. 

It is just the luck of the draw, but win or lose if you write well and can develop a warped sense of humor and a thick skin you will find the arena enjoyable.