Full list of all 26 Kao the Kangaroo achievements.
The base game contains 15 achievements, and there is 1 DLC pack containing 11 achievements.
Find and complete all of the Eternal Wells
Collect KAO letters on all Levels
Collect All Eternal Runes
Defeat one of the Bosses without receiving any damage
Have 20 lives in total
Wear an outfit from Kao 3
Defeat 5 enemies at once with finisher
Finish the game
Beat the Eternal Warrior
Unlock all extra heart slots
Collect all Kaopedia entries about Foes
Defeat the Oldest One
Defeat the Jayabaya
Find and defeat the Terror
Complete a tutorial with Walt
Complete Twisted Hideout (Hard Mode)
Collect every diamond in the Bend the Roo'les
Complete Waterfall Islands (Hard Mode)
Find the Frozen Pirate from Kao 2
Complete Forsaken Monastery (Hard Mode)
Defeat the Crab King
Complete Twisted Hideout (Easy Mode)
Complete Forsaken Monastery (Easy Mode)
Complete Volcano Peaks (Hard Mode)
Complete Volcano Peaks (Easy Mode)
Complete Waterfall Islands (Easy Mode)