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| Unlockable Extras | 100% | |
| Description: The manual is out-dated for the PS2 version of Metal Slug Anthology. You can unlock all the art galleries! How to unlock: By Playing on any difficulty (except #6, which requires that game's Hard / Extended play mode). Simply complete all the games for the gallery. Freeplay in the global options affects all games (including #6). | ||
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| Metal slug anthology | 58% | |
| Play as many changed outfit o x o x up down left right | ||
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