Super Mario 3D World Hidden Luigis: World 2
World 2-1: Conkdor Canyon
Just past the checkpoint, look towards the wall underneath the shifting platforms to find a huge 8-bit Luigi printed on the wall.
World 2-2: Puffprod Peaks
On the first platform, look for an 8-bit Luigi in the fanfare that shoots from the platform.
World 2-3: Shadow-Play Alley
Climb up the wall at the start of the level, and you'll see a shadow of an 8-bit Luigi at the top of the wall.
World 2-4: Really Rolling Hills
You can find an 8-bit Luigi at the bottom of the large rolling hill before the Checkpoint. You'll find another 8-bit Luigi pop out of the Warp Pipe leading to the underground section when the timer drops to around 100 seconds.
World 2-5: Double Cherry Pass
An 8-bit Luigi is hiding in one of the fence posts at the end of the level.
World 2-Boss: Bowser's Bullet Bill Brigade
An 8-bit Luigi can be found along the right set of tank treads.
