In order to enjoy everything that Metroid: Samus Returns on the 3DS has to offer, you’ll have to purchase all four connected amiibos: Samus, Metroid, Zero Suit Samus, and Super Smash Bros. Samus. On top of additional energy and missile tanks, they unlock a map marker for Metroids, an art gallery, and Fusion Mode (Hard Mode).
If you want to unlock everything in Metroid: Samus Returns, you’ll need to purchase four amiibos. In pure money terms, that means that you’ll have to pay the price of the game in amiibos, on top of the game itself. And, as Nintendo told Eurogamer: “this unlockable content is only unlocked using amiibo”. In other words, there’s no way to unlock all of this stuff in-game.
Here’s what each of the Amiibos does in Metroid: Samus Returns, according to Nintendo (via Polygon):
- Metroid amiibo: In Metroid: Samus Returns, the Metroid amiibo unlocks Metroid Marker, a tool to help you find nearby Metroids. In addition, it will also unlock Fusion Mode, a new mode that offers increased difficulty and features Samus in her Fusion suit. Note that Fusion Mode will only be available after finishing the game at least once.
- New Samus amiibo: In Metroid: Samus Returns, the new Samus Aran amiibo will unlock an Aeion reserve tank allowing you to recharge your Aeion energy. In addition, it will unlock a unique Metroid II Art Gallery once the game has been completed at least once.
- Super Smash Bros. Samus amiibo: The Samus amiibo will unlock a reserve missile tank, and after completing the game, an additional in-game art gallery.
- Zero Suit Samus amiibo: The Zero Suit Samus amiibo will unlock a reserve energy tank, and after completing the game, a selection of music.
So, there you have it, folks. You won’t be able to play Hard Mode of Samus Returns. Just now that you’ll have to pay twice the price of the game to get everything.