Artemis database, Medo did codes for the game.
Max Coins on Gain
Infinite Skill Points (Must have at least 1)
Max + Infinite Wrath
Max Stats After 1 Fight (9999)
Max Reaper Gauge + Infinite Reaper Mode
Max Yellow Coins After Save
Max Coins On Load
Max Blue Coins After Save
You can do eboot modding. Use TrueAncestor to decrypt your game's eboot, add the codes, encrypt it back to normal, copy to PS3, and you're good to go. I don't remember how to make packages, and packages don't always work, so that's your gamble if you go the package route. Your EBOOT.BIN is at HDD0:\\GAMES\yourgamename\PS3_GAME\USRDIR\EBOOT.BIN.
You could also try actually using Artemis too. https://github.com/haxxxen/ArtemisPS3
There's also NetCheat, PS3EMPM, CMP Auto Tools, and probably other various tools I don't know about.