We’ll explain how to complete these secret challenges in the full guide below. These are all part of the museum menu, so you won’t find these in the main games. So far, we’ve found a hidden wallpaper, a bonus music track, and a slightly alternate “ending” you can unlock while watching the in-game credits. The Mega Man X series is full of secrets, from Ryu’s Hadoken to hidden armor locations, but there are a few new secrets to find exclusively included in the Mega Man X Legacy Collection.