In this video, I cover getting all the Teensies and Cups for the "Shooting Me Softly" level of the "Desert of Dijiridoos" contained within "Back to Origins".
This level is still pretty hard even in Legends, but of course if you've managed to best the levels in Origins before you should be able to do it again in Legends.
0:10 - I decided to use a Teensy for this level because I basically never play with them normally. They're like the Toads of New Super Mario Bros. Wii in that they're a bizarre choice when you have a wide range of more interesting characters to chose from given the full extent of the franchise. Ah well, at least Minimus could be technically seen as appearing in Rayman 2, whereas I don't think the Goth Teensy was ever seen in a Rayman platformer before Origins (though I might have forgotten Rayman 3 as I wasn't a fan of that one).
1:12 - Watch out for that pulsating red wire here, it has a surprisingly large hitbox.
4:19 - For a change, I think I actually got every single lum that could've possibly been collected.