KarmaZoo

This is the achievement for fully enlightening twenty characters or “stars” as they’re referred to in the game. Once unlocked, each character has three challenges that need to be completed while playing as that character. When all three challenges are completed, the star is shining. Some characters are very easy and you can even complete all three challenges in one run. Some easy characters I would focus on are:

Elephant
Hedgehog
Mouse
Music Box
Owl
Pig
Umbrella
Bulldog
Lion
Spring
Teapot
Watering Can
Duck
Lantern
Whale
Bell
Bird
Flame
Flowerpot
Koala
Pear
Seal
Wolf

You can check the different challenges in the sanctuary telescope. And during a run, use RT to check your challenge progress. Completing all the challenges is somewhat luck based because some characters require specific room obstacles to spawn in order to complete certain goals. Also, if another player has the same character equipped or a character with similar attributes, you may have a more difficult time completing certain objectives. You must also make it all the way to the end of the run for the challenge to count so make sure to help your teammates finish strong.

Another detail to keep in mind, you have to spend karma to unlock each character so try to stick to the cheaper ones. You’ll be wanting to save as much karma as possible to eventually unlock all the library items.

Complete all this with 20 different characters and the achievement’s all yours!