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