Here is the full list of all 24 Mineko's Night Market achievements.
Made it to the top of Mt. Fugu
Fed a snow monkey on Mt. Fugu
Visited every location
Get Caught by Agents 20 times
Won 16 Night Market events
Made 100 sales at the Night Market
Completed the Flower Museum
Ate food 50 times
Pet island cats 100 times
Crafted 100 items
Won 8 Night Market events
Gained all 5 hearts of an NPC
Squeezed 20 fish for dye
Collected 250 hairballs
Won 4 Night Market events
Collected 250 Flowers
You upgraded your house
Collected 100 Flowers
Congratulations! You took your first trip on the local bus.
Crafted 250 items
Completed the Fishing Museum
Completed the Food Museum
Gained 5 hearts of every NPC
Get Ramen from Dad's shop 10 days in a row