Art galleries
Complete the indicated game to unlock it's gallery.
Art Gallery 1: Metal Slug
Art Gallery 2: Metal Slug 2
Art Gallery 3: Metal Slug X
Art Gallery 4: Metal Slug 3
Art Gallery 5: Metal Slug 4
Art Gallery 6: Metal Slug 5
Art Gallery 7: Metal Slug 6
Tonko Gallery: All seven Metal Slug games under the Easy difficulty setting and limited continues.
Special Music
Complete Metal Slug 1, 2, 3, 4, 5 and X on hard difficulty with a limited number of continues. As well as 6 with a limited number of continues
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