@feyone2: The battle with the war machine is very hard. It took me a couple of tries to figure out how to beat it. It has been a while so I don't remember the exact party members I used but here are some suggestions:
Before the fight:
1) Stock up on Pepp Peps and other healing items (for the Pepp Peps get the maximum of 8--you will need it)
2) For your party, you will use Leonardo, Jessica, Ryota, Maximus
3) Go back to the jail and level if you need to. For Leonardo he was about 33-35, Jessica was about level 30, Ryota was 25-27, and Maximus was 26
Strategy for the fight:
The moves you will be using most often are Ryota's Calthrops/Shuriken/Smoke Bomb skills and Maximus's Charge skill. At the start of the fight, have Jessica cast Empower on Leonardo, Maximus cast Charge, and Ryota use Calthrops (if it fails don't use it again). Next round, have Jessica cast Empower on Maximus, Maximus attack, and Ryota use Smoke Bomb. For the remainder of the fight, have Leonardo attack, Jessica use Psi Dart or recasting Empower on Maximus/Leonardo, Maximus casting charge before attacking, and Ryota using Smoke Bomb or Shuriken (if it does more damage then physical attacking). You will need to use Pepp Peps to restore Maximus and Ryota's EF so use them when needed.
Let me know if this helps.
@pretzl: I am glad that I have been able to help you guys/girls through your questions as I am enjoying this game very much and want as many people to enjoy this game so the developer can create a similar game in the future. But are you sure that the game has been taken off the site? I found the game by clicking on "All Games" at the homepage and found the game strolling down a little. If the game has been taken off here, you still can get the game at the developer's website which is
http://jeremyz89.wix.com/soul-of-fire.