To gain extra 10 points to your stat, you have to create a character with a nine character name.
Easy experience
When you start the game and can move around in town, go outside the town (to the west). Go down the stairs and open the treasure chest. It contains 1000g. Go back to town and add a priest with the "Getting allies for your party" hint. Go to the other woman (on the right). You have to enter the H rank coliseum. Do this as many times as desired. After you think you are high enough, go to palace and start the first quest.
Getting allies for your party
You can get allies for in your party in the Targus Guild. It costs 500g for the first ally, 1,000g for the second, etc. When in the guild, go to the woman with the cigar on the left. Select the first option (Ally). You will see four options, "Add Ally", "Remove Ally", "Find New Ally" and "Dismiss". Select the "Find New Ally" option to make an new member for party and you are done. After that, choose the option "Add Ally". You will now have two party members.
Machine race
Unlocking the Machine race requires a lot of walking back and forth. First, complete the "Undiscovered Land" quest. This will let you go to Hokabi. Then, do the "Unopened Gate" quest. Next, complete the "Important Key" quest, which will let you go to Fortmas. Do the "Secret Route Open" quest to let you teleport from Biblos to Fortmas and back. Next, complete the "Top Secret File" quest. Do the "Contest" quest where a Samurai named Kyo will join. Next, do the "New Guild" quest which will let you teleport between Biblos and Hokebi and back. Finally, do the "Mod Maniac's Partner" quest which will let you make Machine allies. Note: Machines can use any weapon but no armor. You can melt down any armor you have and add the stats the armor had to the Machine. The first armor type you use will determine the Machine's color. For example, if you use a Bane +1 Chain Leg it will turn the Machine purple. Machines have six body types and six engines types.
Prequel bonus
Have a saved game file from the original Valhalla Knights to unlock Leena as a character.
Strong monsters
Once you have successfully completed the game, save it as indicated when the credits end. With a cleared game file, start a new game. Head on to the prison entrance and talk to the guard. The guard will ask you if you are a true adventurer. Choose the first option to make the monster stronger. The second time the guard talks to you, choose the second option to return the monsters strength to normal.