Big Big Bonus
Clear original mode without losing any civilians and with a score of 1000,000 points or more.

Extra Stuff
While riding the elevator down to House of The Dead 2, the door will open a couple of times. Shoot all the enemies as quickly and as accurately as possible to get items for original mode in House Of The Dead 2.

Goldman Costume
Clear original mode. The costume will appear in the trunk of the car in the next time you play original mode.

Red Blood (House Of The Dead 2)
Clear the game in original mode.

Unlimited Credits (House Of The Dead 2)
Clear training mode and boss mode with five red stars in each section. Get at least two stars in the "Fight All" section.

Unlimited Death Shots
Clear training mode with five red stars in each section.

Unlock Bruno Costume
Get 70,000 points to play on the "Sin" difficulty in original mode. Get the Bruno costume when a maid comes out of a secret room, hands it to you, and wishes you good luck.

Unlock Quarter Life Item
Clear Boss Mode with five red stars on all the bosses.

Unlock Rogan Costume
Play original mode and select "2.0 Bullets" and "Double Score" items from the trunk. Rescue all civilians except for the second person on level 4. Clear the game to enter the bonus room at the end. A Rogan Costume and Infinite Credits will be in the room.

Unlock Unlimited Credits
Clear game with an "A" rank, then increase the credits past nine until "Free Play" appears in the options screen.

Unlock House of the Dead 2
To unlock House of the Dead 2, beat the game once on any difficulty. House of the Dead 2, in all of its splendour, will be playable.