Wow...... and nobody would have figured that out if ansem hadn't said it. Just use superglide to glide from one corner of the coloseim to the other. Stay in the cornsers and jump around a lot. Use cure and blah blah blah- just jump to avoid the spikes and cure when needed, otherwise its pretty simple. Try equipping the Angel Bangel, Atlas Armlet, and Gaia Bangle. It gives you the best increased stats. But dont worry, I'm at level 91 and I lost to him the other day from a cheap shot. He's a hard boss.