To obtain these bonuses, you and/or your partner cannot use a continue. The bonuses are found just before you reach the final Boss. If you select the parking entrance, continue until the "security guard" chases you twice. After the second time, look to your right and you will see three to four barrels. One of them has a bonus in it. If you do well enough, you will get some boxes with items in them before you face the Wheel Of Fate.
The following are the two possible endings:
-After Rogan and G are done talking, you will see Daniel and Lisa talking. Then, Lisa will start walking ahead of Daniel. Daniel will tell her to wait, then he will start talking to himself. They will then walk off.
-After Rogan and G are done talking, you will see Daniel and Lisa talking. The same thing will happen, but then you will see a van moving. After that you will see the last zombie driving the car. Lisa will say "Come back you slimy bastards", and start running.
Complete the game with an "A" rank, then enter the options screen and select "House Of The Dead 3". You can now increase the credits past nine until "Free Play" appears.Alternately, earn better than an "A" rank one or more times during the game at the point where you lose all your credits. This works best in one player mode.
Unlock the following bonuses by performing the corresponding tasks:
BONUS - HOW TO UNLOCK
Blood Mode - Beat House of the Dead 2 in Survival mode
Bonus room - Beat original mode with score of over 100,000 and save all civilians.
Bruno costume - Get more than 70,000 points and play on the Sin level in original mode. A maid will come out of the secret room and give it to you.
Change blood color - Beat the game in original mode
Emperor boss mode option - Beat boss mode and get high score for all bosses.
Fight all bosses boss mode option - Beat boss mode and get high score for all bosses.
Free Play - Finish any chapter with A or S rank
Goldman Costume - Beat House of the Dead 2 in original mode
Goldman Zombie - Enable free play, intentionally get the lowest score possible on each level in HotD 2. At the end, Goldman will appear as a zombie
House of the Dead 2 - Beat Survival Mode
Rogan costume - Select 2.0 bullets and Double score items from trunk, and begin game in original mode. Rescue all civilians except for the second on on level 4.
Unlimited continues - Beat training and boss modes with five red stars on all sections and get at least 2 stars in the fight all bosses option.
Unlimited death bullets - Beat training mode with five red stars in all sections
Score Mode - At the title screen, press LEFT(2), RIGHT(2), LEFT, RIGHT, LEFT.
BEWILDERMENT - Clear CHAPTER 2.
CHASING SHADOWS - Clear CHAPTER 1.
MECHA ZOMBIE - Destroy a Mecha Zombie.
REMINISCENCE - Clear CHAPTER 0.
SENSORY CHAOS - Clear CHAPTER 3.
TWIN SHOT! - Complete a "TWIN SHOT".
ULTIMATE CHALLENGE - Clear CHAPTER 4.
WHEEL OF FATE - Clear CHAPTER 5.
FATE - Clear all 4 endings.
RESCUE EXPERT - Complete all RESCUE Scenes.
TIME ATTACKER - Clear Time Attack Mode.
SPECIAL AGENT - Rated as "SPECIAL AGENT" in Final Result.