. Save your game immediately after defeating the final boss (while the boss is still exploding)
To activate the built-in cheat menu for Metal Slug Anthology on PSP, enter the following button sequence at the screen: , Circlecap C i r c l e , Squarecap S q u a r e , Trianglecap T r i a n g l e , Trianglecap T r i a n g l e , , Circlecap C i r c l e , Squarecap S q u a r e Cheat Code Effects Metal Slug Anthology Psp Cheats
Below is a comprehensive guide to cheats, unlockables, and techniques for gaining an advantage in the game. Secret Cheat Menu Metal Slug Anthology Psp Cheats