Here is the full list of all 48 The Adventure of NAYU achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Collect 30 pieces of cheese.
Collect 50 pieces of cheese.
Collect 47 achievement stamps.
Activate the game for 60 minutes.
Release the witch's outfit.
Release all outfits.
Release the ninja outfit.
Release the spearman outfit.
Release the cook's outfit.
Collect 10 pieces of cheese.
Knock down 3 GuBee's kings.
Update your high score on the Road to Cheese.
Visit 50 areas.
Unlock 35 items from Lugh's information shop.
Defeat the GuBee's King.
Maximum damage exceeds 99999.
Unlock 21 items from Lugh's information shop.
Knock down 20 boss-level monsters.
Increase the adventurer level to 300.
Increase the adventurer level to 200.
Visit 25 areas.
Maximum damage exceeds 9999.
Collect a cumulative total of 100000 shards of stars.
Knock down 100 monsters.
Increase the adventurer level to 100.
Collect 23 achievement stamps.
Complete the story
Start endless mode
Activate the game for 30 minutes.
Release the guardians of the Forgotten metropolis.
Informed Shiro what you want.
Unlock 7 items from Lugh's information shop.
Collect a cumulative total of 10000 shards of stars.
Discovering the Forgotten Forgotten capital.
Defeat the cave boss.
Activate the game for 15 minutes.
Go into fever mode 10 times.
Knock down 50 monsters.
Strike 300 times.
Out of the woods.
Encounter the researcher in the cave.
Meet Suzu and become friends.
Defeat Rye in the woods.
Defeat Lev in the woods.
Clear the first area of the story.
Defeat the bear in the meadow.
First time in fever state.
Got your first shards of the star.