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