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