Complete the story mission (Marco's Mission) to unlock the Monolith and Extras Menu (which includes a Mini Game, Color Edit, BGM Test, and Movies)
Unlockable How to Unlock Extras Menu Complete Marco's Mission Unlimited Monolith (Sub-Weapon) Complete Marco's Mission
Contributed By: Servbot001.
Unlocking The Slug Gunner.
Gunner Slug is a hidden and a powerful Slug dated back in Metal Slug 5. The Slug Gunner can be unlocked by rearranging the normal Metal Slug to Slug Gunner by adding Gunner core, gunner arm, Gunner cannon and Gunner leg in Slug Laboratory.
Unlockable How to Unlock Slug Gunner Place Gunner core, Gunner arm, Gunner leg and Gunner cannon
Contributed By: cheahyuanhong.
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