How do you beat the Final bosses on Sonic Chronicles the Dark Brotherhood

Uff... That's a tough one.
But here is something recommendable:

1. Use this as a team Knukcles,Shade, Shadow and Omega
2. Use Shadow's chaos spear POW movement as much as you can.
3. Use Omega's beam cannon Pow movement as much as you can.
4. Use Knickles's and Shade's Echinda rush POW movement as much as you can

Now, here's an extra tip: If you want you can use Knickles's Earthquake (or something like that's called,. I think) so it puts the "sleeping" status effect on Ix.
Hope you can defeat him :)

For the absolute FINAL battle (Besides Super Sonic) you NEED Shadow's Atomic Strike or you will fail. Use Omega's beam cannon as before and probably Shade's leech blade.