The "Complete Collection" typically refers to the core titles that defined the series on SNK's Neo Geo hardware. Using WinKawaks 1.65 , you can run:
The debut that introduced Marco and Tarma, setting the standard for smooth animation and slapstick humor. metal slug complete collection for pc winkawaks 165 hot
The sequels that added Eri and Fio, alien invasions, and the "Super Vehicle" improvements found in the "X" remix. The "Complete Collection" typically refers to the core