Here's a video guide, and a written guide:
1. Spare the man at the beginning of the game, begging for help, and eventually killing him.
2. Beat the first two boss fights.
3. Arrive in Arkos, DO NOT flood the town, and talk to the wife in the bottom left house.
4. Do the third boss fight, and travel to Kastski.
5. Talk to the mage in the magic shop to learn a spell that will re-animate the man at the beginning of the game.
*I recommend getting well equipped before proceeding, and possibly fights the next one or two bosses*
6. Travel to the start of the game, and press x on the dead body to reanimate.
*You could use some spells first and replenish mana, like the familiar/doves, or shield.
7. Fight the boss and win.
- The boss will have a close range fire-breathing attack, but you can get the perfect spot where you are right up close, and the fire goes over your head. From here, you can melee the boss.
- A few fire breaths later, and the boss will go to the roof and knock cocoons down, which will have maggots pop out. The familiar/dove is great for taking these out.
- Use your healing spell/potions, and after a few rotations of the right, you should be able to beat it. Good luck!