C2A0-CD5A + 826B-41DF + D261-400F Everyone is invincible, including enemies

The rest of the codes take effect when starting a new game and only work 
until you go up a level
95B9-34ED Start with 99 attack points
EEB9-34ED Start with a lot of attack points
17B5-C75D Start with 99 defense points
EEB5-C75D Start with a lot of defense points
17B7-445F Start with 99 magic defense points
EEB7-445F Start with a lot of magic defense points
7464-CFE7 Start with 50 evade % points
1764-CFE7 Start with 99 evade % points
746D-3F57 Start with 50 hit % points
176D-3F57 Start with 99 hit % points
1786-CFEB + 17BB-17ED Start with 99 HP
EE86-CFEB + EEBB-17ED Start with 255 HP
17BF-1FEF Your dog starts with 99 HP
EEBF-1FEF Your dog starts with 255 HP