Here is the full list of all 30 Spy Chameleon - there are RGB Agent achievements.
ONLY ON HARD - Complete all levels and all challenges
Complete the ladybug challenge on all levels
ONLY ON HARD - Complete all levels with their mission 1 challenges
ONLY ON HARD - Complete level 50 without changing colors
ONLY ON HARD - Complete all levels with their mission 2 challenges
ONLY ON HARD - Complete level 24 collecting all the ladybugs in 17.5 seconds
ONLY ON HARD - Complete all levels with their mission 3 challenges
Complete the ladybug challenge on 45 levels
ONLY ON HARD - Complete all levels with their mission 4 challenges
ONLY ON HARD - Complete all levels with their mission 5 challenges
Complete the ladybug challenge on 15 levels
ONLY ON HARD - Complete all levels in less than 18 minutes
Complete level 75
Achieve a positive calorie balance
ONLY ON HARD - Complete level 63 without eating any flies
Complete level 60
Complete the time challenge on 50 levels
Complete level 45
Change colors one thousand times
Complete 5 levels
Complete level 15
Complete level 30
Complete the fly challenge on 1 level
Complete the fly challenge on 15 levels
Complete the fly challenge on 30 levels
Complete the time challenge on 5 levels
Complete the time challenge on 25 levels
ONLY ON HARD - Complete level 41 without using the button
ONLY ON HARD - Complete level 10 without changing colors
Annoy the same fish 25 times