Here is the full list of all 48 Kraken Academy!! achievements.
Collect all furniture.
Collect 75,000 shlotinki.
Travel back to Monday 5 times.
Complete all side quests.
Befriend the Cafeteria Lord.
Smash 1000 things.
Witness the end of the world.
Dig up all piles of dirt in one time loop.
Go on all the dates.
Befriend Broccoli Girl.
Get a score of 20 or more in Dimitri's challenge.
Collect 175 bottles in one go.
Save Kraken Academy from doom and destruction.
Free the Drama Club spirit.
Put furniture into every slot in your room.
Befriend Kostadin.
Call your Mom 8 times.
Befriend Nikolai.
Befriend Vladimir.
Befriend the Hobo Guy.
Befriend the Janitor.
Wash your hands in 4 different sinks.
Befriend Jean.
Befriend Patitsa.
Befriend Dimitri.
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.
Score a goal in the gym.
Free the Art Club spirit.
Collect 10,000 shlotinki.
Summon a poop demon.
Convert 3 bottlemachines to the cause in one time loop.
Befriend Ana.
Get the cultist robes.
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.