There are multiple ways to unlock the characters of Super Smash Bros. Ultimate by playing the different game modes that it offers. Through the game’s World of Light, Versus, and Classic Modes you can unlock Bayonetta in Smash Bros. Ultimate.
Bayonetta can be unlocked quickly by completing just a couple of rounds of Classic Mode, but she is unlocked in Mario’s character unlock tree in Classic so you will need to have beaten this mode with other specific characters to unlock them.. To unlock Bayonetta in Classic Mode you will need to have beaten classic mode with Mario (which unlocks Sonic the first time you do it). The next time you play with Mario and complete the Classic Mode or the next time you complete Classic Mode with Sonic you will be able to challenge Bayonetta for the character unlock.
The quickest way to unlock Bayonetta in Super Smash Bros Ultimate
The quickest way to unlock Bayonetta in Super Smash Bros. Ultimate is definitely to go about it by beating Classic Mode with Mario or Sonic. Otherwise she’s one of the later unlocks in World of Light mode and in versus mode she is also one of the later unlocks by using that method.
Simply head into Classic Mode, play on any difficulty, and beat the six stages, bonus level, and boss battle. Once you’ve completed Classic Mode with Mario or Sonic you will then see the New Challenger Screen which starts the fight with Bayonetta.
You will need to beat Bayonetta in a one on one match to add her to your roster. Once you do you will have permanently unlocked Bayonetta in Super Smash Bros. Ultimate. However, if you lose to Bayonetta in the one versus one match she will not be unlockable via this method for a little while. However, you can still unlock other characters in Mario’s Classic Mode Route. If you lose to Bayonetta, you the character that you can unlock leapfrogs Bayonetta in the case of Mario or Sonic it would be Little Mac.
After a bit of time this rematch will be available in the Games & More section of the main menu. If you want to go back and unlock Bayonetta but you lost the first time, head to the Challenger’s Approach and then fight them again to unlock.
Mario Route Classic Mode
All of the characters in Mario’s Route can be unlocked with the ones before it in Classic Mode. Meaning Mario will unlock Sonic, Mario and Sonic can unlock Bayonetta. Mario, Sonic, or Bayonetta can unlock Little Mac, and so on. If you fail to beat one of the challengers to unlock them, it will then skip to the next challenger. The one that you lost to will reappear later.
Mario > Sonic > Bayonetta > Little Mac > Ike > Luigi > Roy > Dr. Mario > Olimar.