Blue Stinger

All weapons:
Hold R + L (in order) and press Y, B, Left, Right, B, Y at the options screen. Alternately, successfully complete the game in less than five hours and save the game. Start a new game with the saved game file to begin with all weapons with nine rounds of ammunition. Note: Only Elliot has all the weapons.

Unlimited secret remote bombs (Japanese version):
Press X, Y, A, R, Start, L, Start at the Blue Stinger title screen.

Hidden artwork:
Place the game disc in a PC compatible CD-ROM drive to find more .BMP images from the game in the "omake" directory. Note: Two short voice samples in .WAV format are also in this directory.
Information in this section was contributed by BAtrk the Squirrel.

Near-invincibility:
Successfully complete and save the game. Start a new game with the saved game file to have 200 Hassy Drinks (100 small and 100 large) in the inventory. This should allow the game to be played with near-invincibility, and the additional bonus of not having to buy any other health items. Additionally, any money left from the last game will also be available in the new game.
Information in this section was contributed by Sascha "Goose" Boehme.

Heat-seeking ray gun:
Successfully complete the game twice to receive a heat-seeking ray gun, which is not available in any shop or vending-machine. It fires four heat-seeking lasers.
Information in this section was contributed by Sascha "Goose" Boehme.

Mad mode:
Successfully complete the game three times and save the game. Start a new game with the saved game file. The phrase "Mad Mode" will appear next to the health bar. In this mode 200 Hassy Drinks, all weapons (including the ray gun), and full ammunition will be available.
Information in this section was contributed by Sascha "Goose" Boehme.

Swimmer mode:
Successfully complete the game twice and save the cleared game to a VMU. On the third time through the game, do not save the elevator worker or Devlin, do not win the girl big gailey in the arcade, and do not talk to the doctor in the labs. Have Elliot drink at least five cups of the "free water" in the labs, then complete the game and save it. The character's normal clothes will be replaced by swimsuits.
Information in this section was contributed by Glacius.

Big eyes mode:
Successfully complete the game under the hard difficulty setting.
Information in this section was contributed by Glacius.

Protecting Janine:
Before climbing the tower at the end of the game, make sure that you have the gatling gun with at least three rounds of ammo. When the chrome monsters appear, change to dogs. Stand close to Janine and center yourself on the screen. Dogs will automatically aim, so shoot short bursts whenever you see a monster. The gatling gun does not take time to reload so this should occupy the four minutes.
Information in this section was contributed by ChrisBMichaels.

Lab card password:
Enter 0513 as the password.
Information in this section was contributed by Shahin.

Bank card passwords:
Enter one of the following passwords for the indicated bank card at the Bank Of Kimra (across the street from Rat's Place) to receive the corresponding funds.

Bank card	Money	Password
Eliot	$20	3532
Kimra	$4000	1008
Yucatan	$5700	1861
Bermuda	$6000	1394

Hint: Free Metal Bat:
In order to get a Metal Bat at the start of the game, go to the area where Shuttle A is docked. Directly across is a humanoid and two birds on crates. Take the three out and climb onto the boxes. Climb down, and you will get a Metal Bat and Hassy Long.
Information in this section was contributed by Raiden536.