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