Legend of Zelda, The: Majora's Mask [Subset - 4th Day]

[4th day] Buy the bomb bag in the bomb shop

[4th day] Get the Fairy Mask

[4th day] Obtain the Magic Beans

[4th day] Get the Sonata of Awakening

[4th day] Get the Song of Soaring

[4th day] Get the Hero's Bow

[4th Day] Open every chest in the Woodfall temple

[4th Day] Obtain Odolwa's Remains

[4th day] Get the Mask of Scents

[4th day] Get the Adult Wallet

[4th day] Get the Lens of Truth

[4th day] Get the Goron Mask

[4th day] Obtain Goht's Reimans

[4th day] Obtain the Powder Keg

[4th day] Obtain the Goron Lullaby

[4th Day] Win the Goron race and obtain the Gold Dust

[4th day] Obtain the Don Gero Mask

[4th day] Obtain the Fire Arrow

[4th day] Get acess to the Great Bay Coast (After getting this achievement, this is the point where you can go back to the previous days to get the Zora mask, the owl statue needs to be deactivated)

[4th day] Obtain the Hookshot

[4th day] Obtain the New Wave Bossa Nova

[4th day] Obtain the reward in the Waterfall Rapids

[4th day] Open every chest in the Great Bay Temple

[4th day] Obtain the Ice Arrow

[4th Day] Obtain Gyorg's Remains

[4th day] Obtain the Fairy Defense

[4th day] Obtain the Spin Attack

[4th day] Obtain the Magic Power upgrade

[4th day] Obtain the Kamaro's Mask

[4th day] Obtain the Captain's Mask

[4th day] Get access to the Ikana Canyon

[4th day] Obtain the Gibdo's Mask

[4th day] Obtain the Mirror Shield

[4th day] Obtain the Elegy of Emptiness

4th day] Open every chest in the Stone Tower Temple

[4th day] Obtain the Light Arrow

[4th day] Obtain the Giant's Mask

[4th Day] Obtain Twinmold's Remains

[4th day] Obtain the Fairy's Sword

[4th Day] Beat the game

[4th day] Open every chest in the Snowhead temple

On Astral Observatory, stop the moon's fall and advance to the 4th day