Before you jump on this, you got to know how to do this. As soon as you start like "Tour Mode", if it reaches your turn, choose "Others" then "Out to lunch" and agree to it. Your computer takes over for you. Your computer will play determined by its personality and role that defines your computer style. The default style is "Basic". As you unlock it on the way, you can unlock more wacky and over the top personalities and roles to help improve the computer style.
If your having trouble and want to unlock everything without a sweat, go on "Standard Mode" and the first Dragon Quest map on "Tour Mode" to unlock the first two. Number 25 which combines "Highly Strung" and "Zealot", defines "Dominating". Your AI will try to be aggressive and try to win the game using any means necessary. It might work on both modes. Also if you did unlock furthermore items, use "All about shops" on "Easy Mode" and "All about stocks" on Standard Mode. It's up to you but it's ideal to have the best AI that can handle these challenges.
1. Basic 2. Caring (Lively + Apprentice) 3. Lie in wait (Homemaking + Rogue) 4. Unhurried (Dynamic + Landlord) 5. Along for the ride (Teamworking + Capital Captain) 6. Loner (Dynamic + Capital Captain) 7. Cautious (Fledgling + Capital Captain) 8. Die-hard (Stubborn + Rogue) 9. Thrifty (Slow-but-steady + Boy) 10. Mixed (Outdoorsy + Boy) 11. Playing it straight (Dynamic + Boy) 12. Extreme-freeloader (Teamworking + Boy) 13. Independent (Calculating + Zealot) 14. Pushy (Highly-strung + Boy) 15. Leave it to luck (Normal + Rogue) 16. Free-spirited (Dynamic + Apprentice) 17. Deliberate (Jocular + Boy) 18. Swift-attacking (Scatterbrained + Rogue) 19. Rookie (Fledgling + Rogue) 20. Determined (Slow-but-steady + Monarch) 21. Forcibly-buying (Highly-strung + Rogue) 22. Tacit (Promising + Zealot) 23. Balanced (Normal + Zealot) 24. Hysterical (Unique + Zealot) 25. Dominating (Highly-strung + Zealot) 26. Freeloader (Teamworking + Zealot) 27. All about shops (Jocular + Zealot) 28. All-out (Dynamic + Rogue) 29. Cunning (Calculating + Rogue) 30. All About Stocks (Calculating + Monarch)