Unlock Staff Ghosts
Using Luigi hit a level to release a “ghost” recorded by the game’s developers. You can try and hit this ghost as it builds its way during the level at mach speed.
Unlock Grandmaster Galaxy
To unlock the Grandmaster Galaxy in World S, collect the 240 Stars (120 Gold + 120 Green). This 2D Level will check your Yoshi tongue-slinging skills. It has a Comet Medal and a single Star to collect.
Unlock World S
Hit world 6, you will view the game’s ending! But game is not over yet! You will unlock an entire new world, World S!
In the Tall Trunk Galaxy, get “The Flotacious Blimp Fruit” star to unlock Luigi
for play on certain levels. At the starting of level, you can talk to Luigi to
control him. Hit the level and you will unlock a time trial “ghost.” If you beat
the game, then a door will open on spaceship Mario’s forehead from right under the
main plain platform. Enter this door to transform into Luigi and play any level as
the clumsier bro.
Unlock Green Stars
After you get the 120 gold stars, beat the game and you will unlock more 120 green stars to collect! In the previous galaxies, Green Stars are located at tough-to-reach locations.