Always ensure you download trainers from reputable community sites to avoid malware. Tips for Mastering Metal Slug Complete

Melee attacks deal significantly more damage than standard bullets. If an enemy is close, use your knife to clear them instantly. The Legacy of the Peregrine Falcons

If your version supports the Universe Bios, you can switch the game from "Arcade" mode to "Console" (AES) mode, which often provides a set number of continues that can be reset easily. 3. External Trainers and Scripts

Save and start your game. You can now hit the "Insert Coin" button (usually mapped to '5' or 'C') anytime you run low. 2. The Emulator Method (NeoGeo/MAME)

Most modern PC ports (like those found on Steam or GOG) include a "Free Play" mode or adjustable credit settings.