Here is the full list of all 17 Ramen achievements.
The total amount of money in revenue
The first restaurant
Expanded to level 3 restaurant
Expanded to level 5 restaurant
The 1000th customer to eat
The 10000th customer to eat
Complete the highest achievement of outcomes
Use the first protagonist
Use the second protagonist
Use the third protagonist
Developed the first delicious meal
Developed the second delicious meal
Developed the third delicious meal
Developed the fourth delicious meal
Developed the fifth delicious meal