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