You can easily get the Hydra fight music on Newgrounds. Look for this : Hydra Boss - Twins of Duality.
Hmm, two little thing about the Hydra Boss and the final boss on Epic difficulty. If you are REALLY unlucky, he might do a dual death spell, which pretty much screw you up if flare and/or Seal *preferably seal effect* isnt up. The best way to go around that is simply use the Unleash from the Runeblade. The rest of the fight is pretty much cake if you can keep a blind effect up. Just be sure to kill both end during your turn *It seems that sometimes, the game will bug if you kill one head during a counter and kill the secondary during your turn.*
As for the final boss, he can use is *Ion* effect/ orbitary bombing right at the beginning. Seal him right away and do your best to keep him alive. He s pretty much the easiest guy to deal with if he s sealed and blinded. Although the Satellite thingy isnt really scary so you might want to keep this one or the humanoid alive.
Have fun!
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