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.
Activate the game for 60 minutes.
Collect 47 achievement stamps.
Visit 50 areas.
Collect 50 pieces of cheese.
Defeat the GuBee's King.
Knock down 3 GuBee's kings.
Unlock 35 items from Lugh's information shop.
Knock down 20 boss-level monsters.
Maximum damage exceeds 99999.
Unlock 21 items from Lugh's information shop.
Activate the game for 30 minutes.
Increase the adventurer level to 300.
Release the witch's outfit.
Release the ninja outfit.
Release all outfits.
Release the spearman outfit.
Release the cook's outfit.
Increase the adventurer level to 200.
Collect a cumulative total of 100000 shards of stars.
Visit 25 areas.
Knock down 100 monsters.
Maximum damage exceeds 9999.
Increase the adventurer level to 100.
Collect a cumulative total of 10000 shards of stars.
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.
Unlock 7 items from Lugh's information shop.
Discovering the Forgotten Forgotten capital.
Activate the game for 15 minutes.
Defeat the cave boss.
Go into fever mode 10 times.
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.