Here is the full list of all 9 Kitten Squad achievements.
Rescue 100 sheep.
Loot 20,000 career gold.
Rescue each type of sea creature.
Defeat the Sheep Puncher.
Equip one of each type of cosmetic item.
Completed three bounty quests.
Find all the weapons.
Completed a story quest.
Rescue Olivia the Orca.