Full list of all 42 Kyub achievements worth 1,500 gamerscore.The base game contains 24 achievements worth 1,000 Gamerscore, and there is 1 DLC packs containing 18 achievements worth 500 Gamerscore.
Collect all the gold medals
Collect all the Death Land Silver Medals
Collect all the Death Land Gold Medals
Clear all seasons in Hard Mode
Complete the Summer world in Hard Mode