Gurumin: A Monstrous Adventure cheats and cheat codes for Sony PSP

Unlock movie viewer:
Complete Boss Rush mode.

Hard mode:
Unlocked by completing the game under the Normal difficulty level.

Happy mode:
Unlocked by completing the game under the Hard difficulty level.

Unlockable costumes:
Complete the indicated task to unlock the listed outfit, then
go to Parin's room and use the dresser to change outfit.

Workout Gear: Finish Boss Rush mode in Beginner or Normal mode.
Work Uniform: Finish Boss Rush mode in Hard mode.
Witch Outfit: Give 30 Gold Medals to Hyperbolic in Happy mode.
Vampire Outfit: Give 30 Gold Medals to Hyperbolic in Hard mode.
Swimsuit: Finish Boss Rush in Crazy mode.
School Uniform: Achieve the good ending in Happy mode.
Santa Outfit: Set the system date between December 25th and 31st.
Samurai Outfit: Give 30 Gold Medals to Hyperbolic in Crazy mode.
Princess Dress: Give 30 Gold Medals to Hyperbolic in Normal mode.
Pajamas: Achieve the good ending in Normal mode.
Nurse Outfit: Finish Boss Rush mode in Happy mode.
Monkey Suite: Achieve the good ending in Beginner mode.
Leopard Suit: Achieve the good ending in Crazy mode.
Kimono: Set the system date between January 1st and 7th.
Chinese Dress: Achieve the good ending in Hard mode.
Armor: Give 30 Gold Medals to Hyperbolic in Beginner mode.

Maid Outfit: Can be bought from the vending machine at Spinach
Caverns - Shadow Grotto.

Unlock Hard mode:
Finish the game under the normal difficulty level.

You may also start a new game to access a bonus sub-quest and have all
previously unlocked costumes, money, and the drill power-up available.
Although you will have to find the Headgear again, they will be at
their previous levels.

Unlock Popon as a playable character:
Finish the game on the beginner, normal, hard, and happy difficulty levels.
Start new game and get the drill then return to town. Go to the Fan's
cake shop, to meet with Popon.Talk to Popon to unlock her as a playable
character.

Unlock Boss Rush mode.
Finish the game on the beginner, normal, hard, and happy difficulty levels.
Start a new game and go to the final locked house in human town.
Enter LEGENDARY as a password in the North American version of the game.
or
Enter yarushikanaiwane as a password in the Japanese version in
Hiragana/Katakana.