Upgrade with a discount with a license key for version 4.
: Ensure you enable the Autofire option in the Game Options menu for all games except Metal Slug 6 , as this significantly reduces hand fatigue during boss fights. Metal Slug Anthology
Play Metal Slug 3 or 5 on Hard mode. When you defeat the final boss, save the game immediately as they explode. Let the credits roll to receive your 5 tokens, then exit to the main menu. Reload that same save to instantly trigger the ending again, earning another 5 tokens each time you repeat the process. 3. CWCheats for PSP/PPSSPP Metal Slug Anthology Psp Cheat Codes