Here is the full list of all 46 Color Guardians achievements.
Die 500 times.
Win all achievements in the game!
Fall off a cliff 100 times.
Clear at least one extra level collecting all orbs.
Clear a level playing with the secret character.
Clear a Boss level using the secret character.
Find all of the Castle's hidden Tokis.
Clear a level with all characters.
Clear final Krogma level with all 3 characters.
View the whole world with color for the first time.
Clear the credits level collecting all orbs.
Clear the final Krogma level without dying.
Release all Tokis from their cages.
Defeat the Mountain Boss.
Clear Mountain level 6 without grabbing any orbs.
Clear a level collecting only multicolor orbs.
Destroy every single goblin in Mountain level 3.
Earn an incredible amount of stars. (50%)
Open all gates in Mountain level 2.
Encounter the Old Goblin.
Defeat Krogma on Crystal cave.
Clear Crystal Cave level 6 without crashing any obstacles on the color rails.
Complete a level without grabbing a single orb.
Clear Crystal Cave level 3 without grabbing any orbs.
Fall into a pit with the chopper.
Clear a level with no stars.
Fall into the water 3 times in a row.
Clear a level without passing through checkpoints.
Almost perfect a level and miss by one orb.
Stay 5 minutes on a level using Jellies wihout dying.
Change colors 215 times on a level.
Defeat the Windmill Boss.
Earn a big pile of stars. (30%)
Get to the end of windmill 7 level without using a single jelly.
Get to the choppa!!! Don't miss any of the choppers on Windmill Level 6.
Grab 2000 color orbs.
Use windchopper for the first time.
Earn a bunch of stars. (20%)
Defeat the Castle Boss.
Clear a boss level without dying.
Clear a speed level wihout dying or missing any orbs.
Collect 100 big color orbs.
Complete 5 bonus color sequences.
Grab 500 orbs the perfect way.
Get 3 stars on any level.
Get diamond stars on any level.