Full list of all 11 Kitten Hero achievements worth 1,000 gamerscore. It takes around 0-0.5 hours to unlock all of the achievements on Xbox One.
You Know What It Means.
Complete level 2.
Complete level 5.
Complete level 8.
Complete level 10.
Complete level 15.
Complete level 20.
Rescue a kitten.
Rescue 3 Kittens.
Rescue 5 Kittens.
Rescue 7 Kittens.