Collect your first star. More pipes in the overworld will appear as you progress.

Collect 12 stars to gain access to the Diamond Galaxy.

Collect 30 stars to remove the barrier to the Rusty Pits. You'll also need a key to get in...

Collect 60 stars to remove the barrier to Plutonic Atmosphere. You'll also need a key to get in...

Collect all 101 stars in the Valley of Pluto.

Collect the lost key in the Diamond Galaxy.

Collect the lost key in the Rusty Pits.

Collect the star at the end of Plutonic Atmosphere.

Press the red, green, and blue !-switches.

Collect all 3 stars in Underneath the Ice.

Collect all 6 stars in Plutonic Atmosphere (must also get ending star).

Collect all 6 stars in Bob-omb Backyard.

Collect all 6 stars in Stagnant Lake Triton.

Collect all 6 stars in Maple Mushroom Mountain.

Collect all 6 stars in Rainbow Rush.

Collect all 6 stars in Infested Forgotten Forest.

Collect all 6 stars in Frost Mountain.

Collect all 6 stars in Boneyard Backhouse.

Collect all 6 stars in Slippery Sand Dunes.

Collect all 6 stars in Sunlight Caverns.

Collect all 6 stars in Flat Volcanic Peaks.

Collect all 6 stars in Second Cloudy Construction Zone.

Collect all 6 stars in Dampened Woods.

Collect all 6 stars in Rocky Reservoir.

Collect all 5 stars in Whirlpool Lagoon.

Collect all 3 stars in Translusent Funhouse.

Collect all 3 stars in Wing Towers.

Underneath the Ice - collect the obtainable 1-up mushroom (see picture).

Diamond Galaxy Area 1 - collect both 1-up mushrooms without leaving (see picture, indicator appears in correct area).

Rusty Pits Area 1 - collect both obtainable 1-up mushrooms (see picture, indicator appears in correct area).

Plutonic Atmosphere - collect all 7 1-up mushrooms in *all* areas without leaving (see picture).

Course 1 - collect all 8 1-up mushrooms without leaving (see picture).

Course 10 - collect all 3 1-up mushrooms without leaving (see picture).

Course 11 - collect all 3 1-up mushrooms without leaving (see picture).

Course 12 - collect all 3 1-up mushrooms without leaving (see picture).

Course 2 - collect both 1-up mushrooms without leaving (see picture).

Course 3 - collect the 1-up mushroom (see picture).

Course 4 - collect all 4 1-up mushrooms without leaving (see picture, missions 2-6 only).

Course 5 - collect all 5 1-up mushrooms without leaving (see picture, missions 4-6 only).

Course 6 - collect both 1-up mushrooms without leaving (see picture).

Course 7 - collect both 1-up mushrooms without leaving (see picture).

Course 8 - collect all 5 1-up mushrooms without leaving (see picture).

Course 9 - collect all 7 1-up mushrooms without leaving (see picture).

Diamond Galaxy Area 2 - collect both 1-up mushrooms without leaving (see picture, indicator appears in correct area).

Rusty Pits Area 2 - collect both 1-up mushrooms without leaving (see picture, indicator appears in correct area).

Rocky Reservoir - collect both 1-up mushrooms without leaving (see picture).

The Overworld - collect all 11 1-up mushrooms without leaving (see picture, dying allowed).

Whirlpool Lagoon - collect the 1-up mushroom (see picture).

Translusent Funhouse - collect both 1-up mushrooms without leaving (see picture).

Wing Towers - collect the 1-up mushroom (see picture).

Course 1 - Defeat all 8 skeeters without getting damaged.

Course 2 - Collect the star 'Balance on the Board' while still wearing your vanish cap.

Course 3 - Melt all 6 chill bullies by getting them low enough (bullies melting themselves count).

Collect 100 coins in Boneyard Backhouse.

Course 5 - Collect 70 coins while riding a koopa shell in one go (missions 4-6 only).

Course 6 - Collect the star 'Out of the Cavern' without taking damage.

Course 7 - Collect 7 out of the 8 red coins while riding a koopa shell in one go.

Course 8 - Talk to all 8 Bob-omb Buddies (including the one in the sewers) without leaving.

Course 9 - Defeat all 8 boos without leaving (see comment).

Course 10 - Ground pound all 9 unbreakable crates without leaving.

Course 11 - Activate the chasing 1-up and then collect all 8 red coins and the star before getting that 1-up.

Course 12 - Complete the timed race in under 24 seconds.

Whirlpool Lagoon - Collect the red coin star while riding a koopa shell.

Underneath the Ice - Collect the star on the right-hand side without stepping on more than one shrinking ice cube.

Rocky Reservoir - Collect the star behind the highest door without standing on the purple switch.

Wing Towers - Collect 40 coins while wearing one wing cap (refreshing wing cap resets counter).

Translusent Funhouse - Collect the red coin star without pressing B or Z buttons.

Rusty Pits - Collect the key without standing on the purple switch (re-enter the 2nd area to try again).

Collect 180 coins in Plutonic Atmosphere (see comment).