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.
Visit 50 areas.
Knock down 3 GuBee's kings.
Collect 47 achievement stamps.
Unlock 35 items from Lugh's information shop.
Defeat the GuBee's King.
Knock down 20 boss-level monsters.
Activate the game for 60 minutes.
Release the witch's outfit.
Release the ninja outfit.
Release the spearman outfit.
Release all outfits.
Release the cook's outfit.
Maximum damage exceeds 99999.
Collect 50 pieces of cheese.
Collect 10 pieces of cheese.
Collect 30 pieces of cheese.
Unlock 21 items from Lugh's information shop.
Update your high score on the Road to Cheese.
Increase the adventurer level to 300.
Visit 25 areas.
Increase the adventurer level to 200.
Go into fever mode 10 times.
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.
Collect 23 achievement stamps.
Increase the adventurer level to 100.
Start endless mode
Complete the story
Activate the game for 30 minutes.
Release the guardians of the Forgotten metropolis.
Unlock 7 items from Lugh's information shop.
Informed Shiro what you want.
Discovering the Forgotten Forgotten capital.
Defeat the cave boss.
Knock down 50 monsters.
Activate the game for 15 minutes.
Encounter the researcher in the cave.
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.