The following are known CWCheat Codes for Metal Slug Anthology on Sony Playstation Portable (PSP).

_S ULUS-10154
_G Metal Slug Anthology [US]
_C0 0#_Max Tokens (Omake)
_L 0x0033E360 0x00000063
_C0 1P Activate Gun SLOTS
_L 0x005C289E 0x000000FF
_L 0x105C28AE 0x0000FFFF
_L 0x105C28B0 0x0000FFFF
_L 0x105C28B2 0x0000FFFF
_C0 1P Add Saved POW
_L 0xD0000000 0x10002008
_L 0x30100001 0x012C2CE2
_C0 1P Bomb Select
_L 0xD0000000 0x10000118
_L 0x005C28A0 0x00000001
_L 0xD0000000 0x10000148
_L 0x005C28A0 0x00000002
_C0 1P Custom Gun SLOT1
_L 0x005C28AB 0x00000000
_C0 1P Custom Gun SLOT2
_L 0x005C28AC 0x00000000
_C0 1P Custom Gun SLOT3
_L 0x005C28AD 0x00000000
_C0 1P Harakiri
_L 0xD0000000 0x10000308
_L 0x005C288B 0x00000002
_C0 1P Invincible
_L 0x005C2864 0x00000069
_C0 1P Max Ammos & Bombs
_L 0x105C28A4 0x0000FFFF
_L 0x005C28A1 0x00000063
_C0 1P Max Lives
_L 0x005E3723 0x00000009
_C0 1P Max Time
_L 0x005C27CF 0x00000060
_C0 1P Mod Gun NOW!!
_L 0xD0000000 0x10004110
_L 0x005C289F 0x00000007
_L 0xD0000000 0x10004110
_L 0x005C2885 0x00000001
_L 0xD0000000 0x10004120
_L 0x005C289F 0x00000008
_L 0xD0000000 0x10004120
_L 0x005C2885 0x00000001
_L 0xD0000000 0x10004140
_L 0x005C289F 0x00000009
_L 0xD0000000 0x10004140
_L 0x005C2885 0x00000001
_L 0xD0000000 0x10004180
_L 0x005C289F 0x0000000A
_L 0xD0000000 0x10004180
_L 0x005C2885 0x00000001
_L 0xD0000000 0x10002110
_L 0x005C289F 0x0000000B
_L 0xD0000000 0x10002110
_L 0x005C2885 0x00000001
_L 0xD0000000 0x10002120
_L 0x005C289F 0x0000000C
_L 0xD0000000 0x10002120
_L 0x005C2885 0x00000001
_L 0xD0000000 0x10002140
_L 0x005C289F 0x0000000D
_L 0xD0000000 0x10002140
_L 0x005C2885 0x00000001
_L 0xD0000000 0x10002180
_L 0x005C289F 0x0000000E
_L 0xD0000000 0x10002180
_L 0x005C2885 0x00000001
_L 0xD0000000 0x10008110
_L 0x005C289F 0x0000000F
_L 0xD0000000 0x10008110
_L 0x005C2885 0x00000001
_L 0xD0000000 0x10008120
_L 0x005C289F 0x00000012
_L 0xD0000000 0x10008120
_L 0x005C2885 0x00000002
_L 0xD0000000 0x10008140
_L 0x005C289F 0x00000013
_L 0xD0000000 0x10008140
_L 0x005C2885 0x00000000
_L 0xD0000000 0x10008180
_L 0x005C289F 0x00000000
_L 0xD0000000 0x10008180
_L 0x005C2885 0x00000000
_C0 1P Rapid Attack
_L 0x005C289D 0x00000001
_L 0x005C289C 0x00000001
_C0 1P Skill Eri's Bomb 2/2
_L 0xD0000000 0x10008000
_L 0x005C284C 0x00000002
_C0 1P Skill Ralf's Armor
_L 0x005E36E5 0x00000027
_L 0x005E36AF 0x0000001C
_C0 Infinite Ammo
_L 0x19837862 0x0000FFFF
_C0 Infinite Ammo
_L 0x199436EC 0x0000FFFF
_C0 Infinite Ammo
_L 0x19C63AC4 0x0000FFFF
_C0 Infinite Ammo
_L 0x19DA5E9A 0x0000FFFF
_C0 Infinite Ammo
_L 0x19BA6192 0x0000FFFF
_C0 Infinite Ammo
_L 0x19B447FC 0x0000FFFF
_C0 Infinite Ammo
_L 0x18DC28A4 0x0000FFFF
_C0 Infinite Bombs
_L 0x29837861 0x00000063
_C0 Infinite Bombs
_L 0x299436E9 0x00000063
_C0 Infinite Bombs
_L 0x29C63AC1 000000063
_C0 Infinite Bombs
_L 0x29DA5E94 0x00000063
_C0 Infinite Bombs
_L 0x29BA618C 0x00000063
_C0 Infinite Bombs
_L 0x29B447F6 0x00000063
_C0 Infinite Bombs
_L 0x28DC28A1 0x00000063
_C0 Infinite Lives
_L 0x29837716 0x00000064
_C0 Infinite Lives
_L 0x29938617 0x00000063
_C0 Infinite Lives
_L 0x29C58629 0x00000063
_C0 Infinite Lives
_L 0x29D9765A 0x00000063
_C0 Infinite Lives
_L 0x29B97E28 0x00000063
_C0 Infinite Lives
_L 0x29B37DE0 0x00000063
_C0 Infinite Lives
_L 0x28DE3723 0x00000063
_C0 Invincible
_L 0x29837824 0x0000003D
_C0 Invincible
_L 0x299388B6 0x0000003D
_C0 Invincible
_L 0x29C588E8 0x0000003D
_C0 Invincible
_L 0x29D97920 0x0000003D
_C0 Invincible
_L 0x29B980E0 0x0000003D
_C0 Invincible
_L 0x29B380E8 0x0000003D
_C0 Invincible
_L 0x28DC2864 0x0000003D
_C0 MS3 - Big Laser
_L 0x015A5E92 0x0000000B
_C0 MS3 - Bigger Flame-Thrower gun
_L 0x015A5E92 0x00000009
_C0 MS3 - Bigger Machine Gun
_L 0x015A5E92 0x0000000A
_C0 MS3 - Bullet speed
_L 0x015A5E93 0x000000FF
_C0 MS3 - Drop Shot
_L 0x015A5E92 0x0000000E
_C0 MS3 - Enemy Chaser
_L 0x015A5E92 0x0000000C
_C0 MS3 - Flame Grenade
_L 0x015A5E95 0x00000002
_C0 MS3 - Flame-Thrower
_L 0x015A5E92 0x00000004
_C0 MS3 - Giant Rocket Launcher gun
_L 0x015A5E92 0x00000008
_C0 MS3 - Infinite Ammo
_L 0x015A5E9A 0x000000FF
_C0 MS3 - Infinite Grenade
_L 0x015A5E94 0x0000000B
_C0 MS3 - Invincibility
_L 0x115978F6 0x00000040
_C0 MS3 - Iron Lizard
_L 0x015A5E92 0x0000000D
_C0 MS3 - Laser
_L 0x015A5E92 0x00000006
_C0 MS3 - Longer Shotgun
_L 0x015A5E92 0x00000007
_C0 MS3 - Machine Gun
_L 0x015A5E92 0x00000005
_C0 MS3 - No Grenade
_L 0x015A5E95 0x00000000
_C0 MS3 - Regular Grenade
_L 0x015A5E95 0x00000001
_C0 MS3 - Regular Gun
_L 0x015A5E92 0x00000011
_C0 MS3 - Rocket Launcher
_L 0x015A5E92 0x00000003
_C0 MS3 - Shotgun
_L 0x015A5E92 0x00000002
_C0 MS3 - Stone Grenade
_L 0x015A5E95 0x00000004
_C0 MS3 - Super Grenade Launcher
_L 0x015A5E92 0x0000000F
_C0 MS3 - Tank Cannon Gun
_L 0x015A5E92 0x00000001