Here is the full list of all 48 Kraken Academy!! achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Save Kraken Academy from doom and destruction.
Pet a cat.
Free the Drama Club spirit.
Put furniture into every slot in your room.
Collect all furniture.
Collect 75,000 shlotinki.
Witness the end of the world.
Complete all side quests.
Befriend Kostadin.
Dig up all piles of dirt in one time loop.
Befriend the Hobo Guy.
Befriend Jean.
Befriend Pierre.
Befriend the Janitor.
Convert 3 bottlemachines to the cause in one time loop.
Collect all club cards.
Free the Sports Club spirit.
Pull all the levers in the boss's office.
Get the drama club uniform.
Smash 1000 things.
Go on all the dates.
Befriend Vladimir.
Befriend Nikolai.
Befriend Patitsa.
Beat Yuki and Wendy's challenges on hard.
Get a score of 20 or more in Dimitri's challenge.
Travel back to Monday 5 times.
Befriend Dimitri.
Score a goal in the gym.
Collect 10,000 shlotinki.
Free the Art Club spirit.
Wash your hands in 4 different sinks.
Befriend Broccoli Girl.
Befriend Ana.
Summon a poop demon.
Get the cultist robes.
Befriend Ms. Markova.
Smash 250 things.
Call your Mom 8 times.
Free the Music Club spirit.
Get the skeleboner costume.
Bounce on a bouncy castle.
Collect 175 bottles in one go.
Befriend Simona.
Befriend the Cafeteria Lord.
Get the penguin costume.
Gain the power to travel back in time.
Collect 75 bottles in one go.