Unlock Chainsaw
Beat the game once, save and load the new data. Then, in the Forest World, near the car, search for a cut trunk, the Chainsaw is right beside it.

Unlock Eileen's Nurse Costume
Complete the game on any skill level and then restart using the same save. Check room 302 for the costume. It can be selected on the 3rd run through.

One Weapon Mode:
Get 10 big stars in hard mode.

Unlock Eileen's Nurse Costume
Complete the game on any skill level and then restart using the same save. Check room 302 for the costume. It can be selected on the 3rd run through.

Call restaurant:
When you look out your window, you can see the phone number of a restaurant. You can use the phone to call that number for fun.

Cynthia's Special Costume:
Finish the game with all four endings on one slot. Start a new game and select Eileen's nurse uniform to have Cynthia wearing her special costume.

All Weapons Mode:
Beat One Weapon Mode.

Brand New Fear mode:
Successfully complete the game under any difficulty. Save the game after the credits complete to unlock the "Brand New Fear" option .

Submachine gun:
Successfully complete the game with a rank of at least 9 big stars. Start a game in "Brand New Fear" mode and look in Room 202 in the Apartment World to find a submachine gun for Eileen.