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.
Knock down 3 GuBee's kings.
Unlock 35 items from Lugh's information shop.
Activate the game for 60 minutes.
Maximum damage exceeds 99999.
Unlock 21 items from Lugh's information shop.
Knock down 20 boss-level monsters.
Release the ninja outfit.
Release all outfits.
Release the cook's outfit.
Release the witch's outfit.
Increase the adventurer level to 300.
Defeat the GuBee's King.
Visit 25 areas.
Maximum damage exceeds 9999.
Unlock 7 items from Lugh's information shop.
Increase the adventurer level to 200.
Knock down 100 monsters.
Increase the adventurer level to 100.
Collect a cumulative total of 100000 shards of stars.
Release the spearman outfit.
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
Activate the game for 30 minutes.
Release the guardians of the Forgotten metropolis.
Informed Shiro what you want.
Collect a cumulative total of 10000 shards of stars.
Go into fever mode 10 times.
Defeat the cave boss.
Discovering the Forgotten Forgotten capital.
Activate the game for 15 minutes.
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 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.