While Mario is playing inside Luigi's dreams, Starlow can move Luigi's face to affect the area, such as making him sneeze to spin platforms. Back when I was six, this game seemed like a dream come true. Mario and Luigi can easily overcome it if they match or exceed its level. After, you may have to have one bro chase after the guy while he drops the captured bro's Coins. Hit ground level below said platform to reach a Dreamy Sandoon to battle, with another further left, then a Skipdrill as well. Continue up the rainbow road heh to find a Candy in a L Block at the end, then go left to the next area. In the dream world, go to the right and slingshot Mario up into the lower-right Nightmare Chunk and smash it.
Bean to the southeast, then ascend the ledges to the north for a Super Candy. Have Luigi possess the tornado in the background, then stand on the orange pipe nearby. While on vacation on Pi'illo Island, the bros. At the end of the battle, you have to tap the Star icon to use Finishing Bros. Turn the cart around, stop the thing, and return to the Pi'illo.
Jump across the first two drills - remember, jump off while spinning! Head left and get a Syrup Jar from the L Block, then beat up the Dreamy Sandoon on the ledge nearby. Head west of there and use Mini Mario to go through the hole. Especially that big one - it reveals a Pi'illo and two X marks yielding a Power Bean and a Bros. Sneeze on the next on to the left, get on it, and sneeze again to reach a Syrup Jar, then go down below and sneeze on that pipe to complete the line. Beat the Propellion there, then drop down along the chain of Coins.
Head back to the left and sneeze on the wind vane feather thingies to get the water flowing and the pipes pulsing rather worryingly. The gameplay shifts between Luigi's dream world, where Mario and Luigi move in a 2-D fashion, and the regular world, where they freely roam the overworld. In the next area, stop and save to the southeast. Earn a good deed by few clicks from the comfort of your home. This is a rather glitzy attack that is used to finish the battle.
Recross the ledges and head along that high path into the previous area. Continue up them and go left to the next area. A few turns later, after you get hit by a ball of electricity, you'll be told about how to heal. Block there and continue further right to find a Dreamy Sandoon. I will only use the files for informational purposes. There, go south and east to find a metal platform.
Return to the first moving ledge you used after the first drill and go up and right to the next area. Offensively, I'd just go with what Bros. They usually won't attack, but they can end up absorbing some of the blows from the extra Luigis when jumping, which is not quite ideal. Here, to attack, you charge up the hammer like normal, then slide the stylus to the left if you're right-handed, or right if you're left-handed I assume. Then head right into the next area. At the top, make him sneeze again sand in your nose, Luigi? I would have given it a 1 star if i actually paid for the game but it came free with the 3ds and it is mario. Try using it repeatedly here for some free healing! Go up above and smash that one and head left.
If you do it on a hard surface stone, metal, etc. For the most part, you'll probably want to avoid using Luiginary Attacks - I actually found my jump doing about 35% more damage here. Other stuff is at your disclosure; mostly, it's for items right now. Head east from there and use the Arrow Block for 50 Coins, then head east into the next area. Annoying like that Polterpup in Dark Moon, he'll bounce off.
Continue up and head left to battle another Propellion. So basically ram your way to the right for a while or topple the tower and battle the enemies first. Within the dream world, head left and bop the? Cross the moving platforms to find two more 50-Coin pieces - one next to the last one, and one in an alcove above the next-to-last one. That's gotta hurt - how does he stay asleep! At the end, you have to press the A Button to kick the ball into the enemy horde. The setting for the game is Mario, Luigi, Princess Peach and the Toads being invited on vacation to Pi'ilo Island to finally relax after their continued attacks from Bowser amongst other foes. South of there, you should be able to find a Shock Bomb in an L Block, plus a number of enemies digging through sand all over the area.