As I mentioned on the main page of the guide, I'm going to find and acquire every Teensy in the game and I'm going to show you how to do it all with only a single player. Though I may not collect every last Lum or Skull Coin, I will collect every Lum Cup up to Gold, also netting Lucky Tickets and other things in the process. For the sake of completeness, I'll also show things like the process of scratching off Lucky Tickets, showing off acquired creatures, and the unlocking of various levels throughout the game.
The Wii U version of the game features a different means to control the assist character Murfy, so keep this in mind if you are using this guide for another version of the game.
Unlike its predecessor Rayman Origins, time trials do not take place in the same level but rather via special "Invaded" levels that need to be unlocked separately from the main level. I will list Invaded versions of levels below the video for the main level gameplay.
Also, though I did not include audio commentary for this guide, I did include textual commentary that can be found below each of the corresponding embedded YouTube video players.