Metal Slug Advance Official

In Mission 3, you can find it by shooting the corner of a specific block in the first secret cave area.

You must finish a mission without dying after collecting a card to keep it. The "Paper Thin" Card Metal Slug Advance

While some are just for display, many cards grant gameplay bonuses like increased weapon power, new "Slug" modifications (like the Slug Gunner ), and access to hidden map routes. In Mission 3, you can find it by

Obtaining this card is necessary if you want to unlock the Decoration card . Obtaining this card is necessary if you want

If you are looking for "paper" related to Metal Slug Advance , you are likely referring to the game's central or the specific high-difficulty Paper Thin card . The Card System

When active, your character (Walter or Tyra) will die in a single hit .