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