Card Passwords:
Unlock the following cards by entering the corresponding passwords:
Strain card (No. 046) – “NOJIRI”
Gijin-san card (No. 099) – “SHINTA”
Reaction Block card (No. 119) – “KONAMI”
Viper card (No. 161) – “VIPER”
Mika Slayton card (No. 166) – “MIKA”
Karen Houjou card (No. 170) – “KAREN”
Jehuty card (No. 172) – “JEHUTY”
XM Eight card (No. 187) – “XM8”
Mr. Sigint card (No. 188) – “SIGNT”
Sea Harrier card (No. 197) – “SHRRR”
Decoy Octopus card (No. 203) – “DCY”
Roger McCoy card (No. 212) – “MCCY”
Reiko Hinomoto card (No. 281) – “HNMT”
Kinoshita Ayumi card (No. 285) – “AYM”
Ishii Meguru card (No. 286) – “MGR”
Natsume Sano card (No. 287) – “NTM” Note: This also unlocks the “Solid Eye” video.
MGS4 card (No. 288) – “NEXTGEN”
Jack card (No. 291) – “SONOFSULLY” The Jack card allows you to move one extra space when you move, but your attack is reduced by 20 points. This effect lasts three turns.
Solid Snake MGS4 card (No. 294) – “SNAKE” This card sets your equipment level to 3. It has a picture of Solid Snake with gray hair and an eye patch.
Otacon MGS4 card (No. 295) – “OTACON”
Metal Gear MK. II MGS4 card – “MK2”
Banana Peel card – “RONALDSIU”
Emma’s Parrot card – “GINORMOUSJ”
Gekko – “GEKKO”
No Smoking card – “SMOKING”
Possessed Arm card – “THESPANIARD”
Solid Eye card – “TOBIDACID”
Card Passwords (Japanese Version):
Unlock the following cards by entering the corresponding passwords in the Japanese version of the game:
Strain card (No. 046) – “VRS”
Gijin-san card (No. 099) – “CCT”
Mr. Sigint card (No. 188) – “SGNT”
Sea Harrier card (No. 197) – “HRRR”
Decoy Octopus card (No. 203) – “DCYCTPS”
Roger McCoy card (No. 212) – “RGR”
Reiko Hinomoto card (No. 281) – “XX”
Kinoshita Ayumi card (No. 285) – “KINOSHITAA”
Ishii Meguru card (No. 286) – “SHIIMEG”
Natsume Sano card (No. 287) – “NONAT” Note: This also unlocks the “Solid Eye” video.
MGS4 card (No. 288) – “NO PLACE”
Completion bonuses:
Beat the game to unlock the “Card Movies” option in the Deck Editor and Metal Gear REX and MGS 4 cards in your deck. Continue playing past the first part of stage 3 after completing the game once to unlock the MGS3: Subsistence pack. Beat the game two times to unlock the Metal Gear RAY card, MGS Integral pack, MGS2 Substance pack, and Chronicle Unlimited.
Control title screen:
Use the Analog-stick to scroll up and down. Press L to change the color of the “Metal Gear Ac!d 2” text to black and remove the black pixel effect. Press R to zoom in on the title screen. Upon zooming in you will have the freedom to “scroll” the Analog-stick.
Bonuses:
Unlock the following bonuses by performing the corresponding tasks:
EZ Gun – Beat Arena mode half way on the Easy difficulty setting
Stealth – Beat Arena mode half way on the Normal difficulty setting
Running Man – Beat Arena mode half way on the Hard difficulty setting
G36C – Beat Arena mode half way on the Extreme difficulty setting
Card upgrades:
Upgrade the following cards to receive different ones. Note: All upgraded cards will count as a different card than the original.
Strand will upgrade to Critical Shot.
Equipment Lv.2 will upgrade to Equipment Lv.3.
Bandage will upgrade to Syptic .
McDonnell Miller will upgrade to Liquid Snake.
Gray Fox will upgrade to Cyborg Ninja.
Ocelot will upgrade to Revolver Ocelot.
Metal Gear D Revised will upgrade to Metal Gear Mk-II.
Django will upgrade to Sabata.
Otenko Sama will upgrade to Otenko Sama .
Naked Snake will upgrade to Big Boss.?