Boost Stat
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.
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.