Fighting Fantasy (Japan revision ?)

The brave knight takes on a slew of medieval opponents. Money won during fights can be used to purchase fighter upgrades.

The game has 9 different selectable colosseums, each with a different opponent to face:

Pandemonium: Cawnus the Lamia Noble

Gehenna: Gran the Gargoyle

Tarterus: Norfolk the Lizard Man

Gadsheim: Sharon the Armor Dragon

Archeron: Daldnoa the Scorpion Man

Elysium: Solomon the Wizard

Twin Paradises: Charry Steve The Assassins

Abyss: Pon the Giant