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